java.math
Class BigDecimal

java.lang.Object sample code for java.lang.Object definition code for java.lang.Object 
  extended by java.lang.Number sample code for java.lang.Number definition code for java.lang.Number 
      extended by java.math.BigDecimal
All Implemented Interfaces:
Serializable sample code for java.io.Serializable definition code for java.io.Serializable , Comparable sample code for java.lang.Comparable definition code for java.lang.Comparable <BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal >

public class BigDecimal
extends Number sample code for java.lang.Number definition code for java.lang.Number
implements Comparable sample code for java.lang.Comparable definition code for java.lang.Comparable <BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal >

Immutable, arbitrary-precision signed decimal numbers. A BigDecimal consists of an arbitrary precision integer unscaled value and a 32-bit integer scale. If zero or positive, the scale is the number of digits to the right of the decimal point. If negative, the unscaled value of the number is multiplied by ten to the power of the negation of the scale. The value of the number represented by the BigDecimal is therefore (unscaledValue × 10-scale).

The BigDecimal class provides operations for arithmetic, scale manipulation, rounding, comparison, hashing, and format conversion. The toString() sample code for java.math.BigDecimal.toString() definition code for java.math.BigDecimal.toString() method provides a canonical representation of a BigDecimal.

The BigDecimal class gives its user complete control over rounding behavior. If no rounding mode is specified and the exact result cannot be represented, an exception is thrown; otherwise, calculations can be carried out to a chosen precision and rounding mode by supplying an appropriate MathContext sample code for java.math.MathContext definition code for java.math.MathContext object to the operation. In either case, eight rounding modes are provided for the control of rounding. Using the integer fields in this class (such as ROUND_HALF_UP sample code for java.math.BigDecimal.ROUND_HALF_UP definition code for java.math.BigDecimal.ROUND_HALF_UP ) to represent rounding mode is largely obsolete; the enumeration values of the RoundingMode enum, (such as RoundingMode.HALF_UP sample code for java.math.RoundingMode.HALF_UP definition code for java.math.RoundingMode.HALF_UP ) should be used instead.

When a MathContext object is supplied with a precision setting of 0 (for example, MathContext.UNLIMITED sample code for java.math.MathContext.UNLIMITED definition code for java.math.MathContext.UNLIMITED ), arithmetic operations are exact, as are the arithmetic methods which take no MathContext object. (This is the only behavior that was supported in releases prior to 5.) As a corollary of computing the exact result, the rounding mode setting of a MathContext object with a precision setting of 0 is not used and thus irrelevant. In the case of divide, the exact quotient could have an infinitely long decimal expansion; for example, 1 divided by 3. If the quotient has a nonterminating decimal expansion and the operation is specified to return an exact result, an ArithmeticException is thrown. Otherwise, the exact result of the division is returned, as done for other operations.

When the precision setting is not 0, the rules of BigDecimal arithmetic are broadly compatible with selected modes of operation of the arithmetic defined in ANSI X3.274-1996 and ANSI X3.274-1996/AM 1-2000 (section 7.4). Unlike those standards, BigDecimal includes many rounding modes, which were mandatory for division in BigDecimal releases prior to 5. Any conflicts between these ANSI standards and the BigDecimal specification are resolved in favor of BigDecimal.

Since the same numerical value can have different representations (with different scales), the rules of arithmetic and rounding must specify both the numerical result and the scale used in the result's representation.

In general the rounding modes and precision setting determine how operations return results with a limited number of digits when the exact result has more digits (perhaps infinitely many in the case of division) than the number of digits returned. First, the total number of digits to return is specified by the MathContext's precision setting; this determines the result's precision. The digit count starts from the leftmost nonzero digit of the exact result. The rounding mode determines how any discarded trailing digits affect the returned result.

For all arithmetic operators , the operation is carried out as though an exact intermediate result were first calculated and then rounded to the number of digits specified by the precision setting (if necessary), using the selected rounding mode. If the exact result is not returned, some digit positions of the exact result are discarded. When rounding increases the magnitude of the returned result, it is possible for a new digit position to be created by a carry propagating to a leading "9" digit. For example, rounding the value 999.9 to three digits rounding up would be numerically equal to one thousand, represented as 100×101. In such cases, the new "1" is the leading digit position of the returned result.

Besides a logical exact result, each arithmetic operation has a preferred scale for representing a result. The preferred scale for each operation is listed in the table below.

Preferred Scales for Results of Arithmetic Operations

OperationPreferred Scale of Result
Addmax(addend.scale(), augend.scale())
Subtractmax(minuend.scale(), subtrahend.scale())
Multiplymultiplier.scale() + multiplicand.scale()
Dividedividend.scale() - divisor.scale()
These scales are the ones used by the methods which return exact arithmetic results; except that an exact divide may have to use a larger scale since the exact result may have more digits. For example, 1/32 is 0.03125.

Before rounding, the scale of the logical exact intermediate result is the preferred scale for that operation. If the exact numerical result cannot be represented in precision digits, rounding selects the set of digits to return and the scale of the result is reduced from the scale of the intermediate result to the least scale which can represent the precision digits actually returned. If the exact result can be represented with at most precision digits, the representation of the result with the scale closest to the preferred scale is returned. In particular, an exactly representable quotient may be represented in fewer than precision digits by removing trailing zeros and decreasing the scale. For example, rounding to three digits using the floor sample code for java.math.RoundingMode.FLOOR definition code for java.math.RoundingMode.FLOOR rounding mode,
19/100 = 0.19 // integer=19, scale=2
but
21/110 = 0.190 // integer=190, scale=3

Note that for add, subtract, and multiply, the reduction in scale will equal the number of digit positions of the exact result which are discarded. If the rounding causes a carry propagation to create a new high-order digit position, an additional digit of the result is discarded than when no new digit position is created.

Other methods may have slightly different rounding semantics. For example, the result of the pow method using the specified algorithm sample code for java.math.BigDecimal.pow(int, java.math.MathContext) definition code for java.math.BigDecimal.pow(int, java.math.MathContext) can occasionally differ from the rounded mathematical result by more than one unit in the last place, one ulp sample code for java.math.BigDecimal.ulp() definition code for java.math.BigDecimal.ulp() .

Two types of operations are provided for manipulating the scale of a BigDecimal: scaling/rounding operations and decimal point motion operations. Scaling/rounding operations (setScale sample code for java.math.BigDecimal.setScale(int, java.math.RoundingMode) definition code for java.math.BigDecimal.setScale(int, java.math.RoundingMode) and round sample code for java.math.BigDecimal.round(java.math.MathContext) definition code for java.math.BigDecimal.round(java.math.MathContext) ) return a BigDecimal whose value is approximately (or exactly) equal to that of the operand, but whose scale or precision is the specified value; that is, they increase or decrease the precision of the stored number with minimal effect on its value. Decimal point motion operations (movePointLeft sample code for java.math.BigDecimal.movePointLeft(int) definition code for java.math.BigDecimal.movePointLeft(int) and movePointRight sample code for java.math.BigDecimal.movePointRight(int) definition code for java.math.BigDecimal.movePointRight(int) ) return a BigDecimal created from the operand by moving the decimal point a specified distance in the specified direction.

For the sake of brevity and clarity, pseudo-code is used throughout the descriptions of BigDecimal methods. The pseudo-code expression (i + j) is shorthand for "a BigDecimal whose value is that of the BigDecimal i added to that of the BigDecimal j." The pseudo-code expression (i == j) is shorthand for "true if and only if the BigDecimal i represents the same value as the BigDecimal j." Other pseudo-code expressions are interpreted similarly. Square brackets are used to represent the particular BigInteger and scale pair defining a BigDecimal value; for example [19, 2] is the BigDecimal numerically equal to 0.19 having a scale of 2.

Note: care should be exercised if BigDecimal objects are used as keys in a SortedMap sample code for java.util.SortedMap definition code for java.util.SortedMap or elements in a SortedSet sample code for java.util.SortedSet definition code for java.util.SortedSet since BigDecimal's natural ordering is inconsistent with equals. See Comparable sample code for java.lang.Comparable definition code for java.lang.Comparable , SortedMap sample code for java.util.SortedMap definition code for java.util.SortedMap or SortedSet sample code for java.util.SortedSet definition code for java.util.SortedSet for more information.

All methods and constructors for this class throw NullPointerException when passed a null object reference for any input parameter.

See Also:
BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger , MathContext sample code for java.math.MathContext definition code for java.math.MathContext , RoundingMode sample code for java.math.RoundingMode definition code for java.math.RoundingMode , SortedMap sample code for java.util.SortedMap definition code for java.util.SortedMap , SortedSet sample code for java.util.SortedSet definition code for java.util.SortedSet , Serialized Form

Field Summary
static BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal ONE sample code for java.math.BigDecimal.ONE definition code for java.math.BigDecimal.ONE
          The value 1, with a scale of 0.
static int ROUND_CEILING sample code for java.math.BigDecimal.ROUND_CEILING definition code for java.math.BigDecimal.ROUND_CEILING
          Rounding mode to round towards positive infinity.
static int ROUND_DOWN sample code for java.math.BigDecimal.ROUND_DOWN definition code for java.math.BigDecimal.ROUND_DOWN
          Rounding mode to round towards zero.
static int ROUND_FLOOR sample code for java.math.BigDecimal.ROUND_FLOOR definition code for java.math.BigDecimal.ROUND_FLOOR
          Rounding mode to round towards negative infinity.
static int ROUND_HALF_DOWN sample code for java.math.BigDecimal.ROUND_HALF_DOWN definition code for java.math.BigDecimal.ROUND_HALF_DOWN
          Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round down.
static int ROUND_HALF_EVEN sample code for java.math.BigDecimal.ROUND_HALF_EVEN definition code for java.math.BigDecimal.ROUND_HALF_EVEN
          Rounding mode to round towards the "nearest neighbor" unless both neighbors are equidistant, in which case, round towards the even neighbor.
static int ROUND_HALF_UP sample code for java.math.BigDecimal.ROUND_HALF_UP definition code for java.math.BigDecimal.ROUND_HALF_UP
          Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round up.
static int ROUND_UNNECESSARY sample code for java.math.BigDecimal.ROUND_UNNECESSARY definition code for java.math.BigDecimal.ROUND_UNNECESSARY
          Rounding mode to assert that the requested operation has an exact result, hence no rounding is necessary.
static int ROUND_UP sample code for java.math.BigDecimal.ROUND_UP definition code for java.math.BigDecimal.ROUND_UP
          Rounding mode to round away from zero.
static BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal TEN sample code for java.math.BigDecimal.TEN definition code for java.math.BigDecimal.TEN
          The value 10, with a scale of 0.
static BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal ZERO sample code for java.math.BigDecimal.ZERO definition code for java.math.BigDecimal.ZERO
          The value 0, with a scale of 0.
 
Constructor Summary
BigDecimal sample code for java.math.BigDecimal.BigDecimal(java.math.BigInteger) definition code for java.math.BigDecimal.BigDecimal(java.math.BigInteger) (BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger  val)
          Translates a BigInteger into a BigDecimal.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(java.math.BigInteger, int) definition code for java.math.BigDecimal.BigDecimal(java.math.BigInteger, int) (BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger  unscaledVal, int scale)
          Translates a BigInteger unscaled value and an int scale into a BigDecimal.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(java.math.BigInteger, int, java.math.MathContext) definition code for java.math.BigDecimal.BigDecimal(java.math.BigInteger, int, java.math.MathContext) (BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger  unscaledVal, int scale, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Translates a BigInteger unscaled value and an int scale into a BigDecimal, with rounding according to the context settings.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(java.math.BigInteger, java.math.MathContext) definition code for java.math.BigDecimal.BigDecimal(java.math.BigInteger, java.math.MathContext) (BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger  val, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Translates a BigInteger into a BigDecimal rounding according to the context settings.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(char[]) definition code for java.math.BigDecimal.BigDecimal(char[]) (char[] in)
          Translates a character array representation of a BigDecimal into a BigDecimal, accepting the same sequence of characters as the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(char[], int, int) definition code for java.math.BigDecimal.BigDecimal(char[], int, int) (char[] in, int offset, int len)
          Translates a character array representation of a BigDecimal into a BigDecimal, accepting the same sequence of characters as the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor, while allowing a sub-array to be specified.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(char[], int, int, java.math.MathContext) definition code for java.math.BigDecimal.BigDecimal(char[], int, int, java.math.MathContext) (char[] in, int offset, int len, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Translates a character array representation of a BigDecimal into a BigDecimal, accepting the same sequence of characters as the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor, while allowing a sub-array to be specified and with rounding according to the context settings.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(char[], java.math.MathContext) definition code for java.math.BigDecimal.BigDecimal(char[], java.math.MathContext) (char[] in, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Translates a character array representation of a BigDecimal into a BigDecimal, accepting the same sequence of characters as the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor and with rounding according to the context settings.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(double) definition code for java.math.BigDecimal.BigDecimal(double) (double val)
          Translates a double into a BigDecimal which is the exact decimal representation of the double's binary floating-point value.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(double, java.math.MathContext) definition code for java.math.BigDecimal.BigDecimal(double, java.math.MathContext) (double val, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Translates a double into a BigDecimal, with rounding according to the context settings.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(int) definition code for java.math.BigDecimal.BigDecimal(int) (int val)
          Translates an int into a BigDecimal.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(int, java.math.MathContext) definition code for java.math.BigDecimal.BigDecimal(int, java.math.MathContext) (int val, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Translates an int into a BigDecimal, with rounding according to the context settings.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(long) definition code for java.math.BigDecimal.BigDecimal(long) (long val)
          Translates a long into a BigDecimal.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(long, java.math.MathContext) definition code for java.math.BigDecimal.BigDecimal(long, java.math.MathContext) (long val, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Translates a long into a BigDecimal, with rounding according to the context settings.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  val)
          Translates the string representation of a BigDecimal into a BigDecimal.
BigDecimal sample code for java.math.BigDecimal.BigDecimal(java.lang.String, java.math.MathContext) definition code for java.math.BigDecimal.BigDecimal(java.lang.String, java.math.MathContext) (String sample code for java.lang.String definition code for java.lang.String  val, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Translates the string representation of a BigDecimal into a BigDecimal, accepting the same strings as the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor, with rounding according to the context settings.
 
Method Summary
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal abs sample code for java.math.BigDecimal.abs() definition code for java.math.BigDecimal.abs() ()
          Returns a BigDecimal whose value is the absolute value of this BigDecimal, and whose scale is this.scale().
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal abs sample code for java.math.BigDecimal.abs(java.math.MathContext) definition code for java.math.BigDecimal.abs(java.math.MathContext) (MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a BigDecimal whose value is the absolute value of this BigDecimal, with rounding according to the context settings.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal add sample code for java.math.BigDecimal.add(java.math.BigDecimal) definition code for java.math.BigDecimal.add(java.math.BigDecimal) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  augend)
          Returns a BigDecimal whose value is (this + augend), and whose scale is max(this.scale(), augend.scale()).
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal add sample code for java.math.BigDecimal.add(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.add(java.math.BigDecimal, java.math.MathContext) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  augend, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a BigDecimal whose value is (this + augend), with rounding according to the context settings.
 byte byteValueExact sample code for java.math.BigDecimal.byteValueExact() definition code for java.math.BigDecimal.byteValueExact() ()
          Converts this BigDecimal to a byte, checking for lost information.
 int compareTo sample code for java.math.BigDecimal.compareTo(java.math.BigDecimal) definition code for java.math.BigDecimal.compareTo(java.math.BigDecimal) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  val)
          Compares this BigDecimal with the specified BigDecimal.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal) definition code for java.math.BigDecimal.divide(java.math.BigDecimal) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor)
          Returns a BigDecimal whose value is (this / divisor), and whose preferred scale is (this.scale() - divisor.scale()); if the exact quotient cannot be represented (because it has a non-terminating decimal expansion) an ArithmeticException is thrown.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal, int) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, int) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor, int roundingMode)
          Returns a BigDecimal whose value is (this / divisor), and whose scale is this.scale().
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal, int, int) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, int, int) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor, int scale, int roundingMode)
          Returns a BigDecimal whose value is (this / divisor), and whose scale is as specified.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal, int, java.math.RoundingMode) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, int, java.math.RoundingMode) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor, int scale, RoundingMode sample code for java.math.RoundingMode definition code for java.math.RoundingMode  roundingMode)
          Returns a BigDecimal whose value is (this / divisor), and whose scale is as specified.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, java.math.MathContext) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a BigDecimal whose value is (this / divisor), with rounding according to the context settings.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal, java.math.RoundingMode) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, java.math.RoundingMode) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor, RoundingMode sample code for java.math.RoundingMode definition code for java.math.RoundingMode  roundingMode)
          Returns a BigDecimal whose value is (this / divisor), and whose scale is this.scale().
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal [] divideAndRemainder sample code for java.math.BigDecimal.divideAndRemainder(java.math.BigDecimal) definition code for java.math.BigDecimal.divideAndRemainder(java.math.BigDecimal) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor)
          Returns a two-element BigDecimal array containing the result of divideToIntegralValue followed by the result of remainder on the two operands.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal [] divideAndRemainder sample code for java.math.BigDecimal.divideAndRemainder(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.divideAndRemainder(java.math.BigDecimal, java.math.MathContext) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a two-element BigDecimal array containing the result of divideToIntegralValue followed by the result of remainder on the two operands calculated with rounding according to the context settings.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal divideToIntegralValue sample code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal) definition code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor)
          Returns a BigDecimal whose value is the integer part of the quotient (this / divisor) rounded down.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal divideToIntegralValue sample code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal, java.math.MathContext) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a BigDecimal whose value is the integer part of (this / divisor).
 double doubleValue sample code for java.math.BigDecimal.doubleValue() definition code for java.math.BigDecimal.doubleValue() ()
          Converts this BigDecimal to a double.
 boolean equals sample code for java.math.BigDecimal.equals(java.lang.Object) definition code for java.math.BigDecimal.equals(java.lang.Object) (Object sample code for java.lang.Object definition code for java.lang.Object  x)
          Compares this BigDecimal with the specified Object for equality.
 float floatValue sample code for java.math.BigDecimal.floatValue() definition code for java.math.BigDecimal.floatValue() ()
          Converts this BigDecimal to a float.
 int hashCode sample code for java.math.BigDecimal.hashCode() definition code for java.math.BigDecimal.hashCode() ()
          Returns the hash code for this BigDecimal.
 int intValue sample code for java.math.BigDecimal.intValue() definition code for java.math.BigDecimal.intValue() ()
          Converts this BigDecimal to an int.
 int intValueExact sample code for java.math.BigDecimal.intValueExact() definition code for java.math.BigDecimal.intValueExact() ()
          Converts this BigDecimal to an int, checking for lost information.
 long longValue sample code for java.math.BigDecimal.longValue() definition code for java.math.BigDecimal.longValue() ()
          Converts this BigDecimal to a long.
 long longValueExact sample code for java.math.BigDecimal.longValueExact() definition code for java.math.BigDecimal.longValueExact() ()
          Converts this BigDecimal to a long, checking for lost information.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal max sample code for java.math.BigDecimal.max(java.math.BigDecimal) definition code for java.math.BigDecimal.max(java.math.BigDecimal) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  val)
          Returns the maximum of this BigDecimal and val.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal min sample code for java.math.BigDecimal.min(java.math.BigDecimal) definition code for java.math.BigDecimal.min(java.math.BigDecimal) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  val)
          Returns the minimum of this BigDecimal and val.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal movePointLeft sample code for java.math.BigDecimal.movePointLeft(int) definition code for java.math.BigDecimal.movePointLeft(int) (int n)
          Returns a BigDecimal which is equivalent to this one with the decimal point moved n places to the left.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal movePointRight sample code for java.math.BigDecimal.movePointRight(int) definition code for java.math.BigDecimal.movePointRight(int) (int n)
          Returns a BigDecimal which is equivalent to this one with the decimal point moved n places to the right.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal multiply sample code for java.math.BigDecimal.multiply(java.math.BigDecimal) definition code for java.math.BigDecimal.multiply(java.math.BigDecimal) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  multiplicand)
          Returns a BigDecimal whose value is (this × multiplicand), and whose scale is (this.scale() + multiplicand.scale()).
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal multiply sample code for java.math.BigDecimal.multiply(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.multiply(java.math.BigDecimal, java.math.MathContext) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  multiplicand, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a BigDecimal whose value is (this × multiplicand), with rounding according to the context settings.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal negate sample code for java.math.BigDecimal.negate() definition code for java.math.BigDecimal.negate() ()
          Returns a BigDecimal whose value is (-this), and whose scale is this.scale().
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal negate sample code for java.math.BigDecimal.negate(java.math.MathContext) definition code for java.math.BigDecimal.negate(java.math.MathContext) (MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a BigDecimal whose value is (-this), with rounding according to the context settings.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal plus sample code for java.math.BigDecimal.plus() definition code for java.math.BigDecimal.plus() ()
          Returns a BigDecimal whose value is (+this), and whose scale is this.scale().
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal plus sample code for java.math.BigDecimal.plus(java.math.MathContext) definition code for java.math.BigDecimal.plus(java.math.MathContext) (MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a BigDecimal whose value is (+this), with rounding according to the context settings.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal pow sample code for java.math.BigDecimal.pow(int) definition code for java.math.BigDecimal.pow(int) (int n)
          Returns a BigDecimal whose value is (thisn), The power is computed exactly, to unlimited precision.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal pow sample code for java.math.BigDecimal.pow(int, java.math.MathContext) definition code for java.math.BigDecimal.pow(int, java.math.MathContext) (int n, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a BigDecimal whose value is (thisn).
 int precision sample code for java.math.BigDecimal.precision() definition code for java.math.BigDecimal.precision() ()
          Returns the precision of this BigDecimal.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal remainder sample code for java.math.BigDecimal.remainder(java.math.BigDecimal) definition code for java.math.BigDecimal.remainder(java.math.BigDecimal) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor)
          Returns a BigDecimal whose value is (this % divisor).
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal remainder sample code for java.math.BigDecimal.remainder(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.remainder(java.math.BigDecimal, java.math.MathContext) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a BigDecimal whose value is (this % divisor), with rounding according to the context settings.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal round sample code for java.math.BigDecimal.round(java.math.MathContext) definition code for java.math.BigDecimal.round(java.math.MathContext) (MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a BigDecimal rounded according to the MathContext settings.
 int scale sample code for java.math.BigDecimal.scale() definition code for java.math.BigDecimal.scale() ()
          Returns the scale of this BigDecimal.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal scaleByPowerOfTen sample code for java.math.BigDecimal.scaleByPowerOfTen(int) definition code for java.math.BigDecimal.scaleByPowerOfTen(int) (int n)
          Returns a BigDecimal whose numerical value is equal to (this * 10n).
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal setScale sample code for java.math.BigDecimal.setScale(int) definition code for java.math.BigDecimal.setScale(int) (int newScale)
          Returns a BigDecimal whose scale is the specified value, and whose value is numerically equal to this BigDecimal's.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal setScale sample code for java.math.BigDecimal.setScale(int, int) definition code for java.math.BigDecimal.setScale(int, int) (int newScale, int roundingMode)
          Returns a BigDecimal whose scale is the specified value, and whose unscaled value is determined by multiplying or dividing this BigDecimal's unscaled value by the appropriate power of ten to maintain its overall value.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal setScale sample code for java.math.BigDecimal.setScale(int, java.math.RoundingMode) definition code for java.math.BigDecimal.setScale(int, java.math.RoundingMode) (int newScale, RoundingMode sample code for java.math.RoundingMode definition code for java.math.RoundingMode  roundingMode)
          Returns a BigDecimal whose scale is the specified value, and whose unscaled value is determined by multiplying or dividing this BigDecimal's unscaled value by the appropriate power of ten to maintain its overall value.
 short shortValueExact sample code for java.math.BigDecimal.shortValueExact() definition code for java.math.BigDecimal.shortValueExact() ()
          Converts this BigDecimal to a short, checking for lost information.
 int signum sample code for java.math.BigDecimal.signum() definition code for java.math.BigDecimal.signum() ()
          Returns the signum function of this BigDecimal.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal stripTrailingZeros sample code for java.math.BigDecimal.stripTrailingZeros() definition code for java.math.BigDecimal.stripTrailingZeros() ()
          Returns a BigDecimal which is numerically equal to this one but with any trailing zeros removed from the representation.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal subtract sample code for java.math.BigDecimal.subtract(java.math.BigDecimal) definition code for java.math.BigDecimal.subtract(java.math.BigDecimal) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  subtrahend)
          Returns a BigDecimal whose value is (this - subtrahend), and whose scale is max(this.scale(), subtrahend.scale()).
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal subtract sample code for java.math.BigDecimal.subtract(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.subtract(java.math.BigDecimal, java.math.MathContext) (BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  subtrahend, MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
          Returns a BigDecimal whose value is (this - subtrahend), with rounding according to the context settings.
 BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger toBigInteger sample code for java.math.BigDecimal.toBigInteger() definition code for java.math.BigDecimal.toBigInteger() ()
          Converts this BigDecimal to a BigInteger.
 BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger toBigIntegerExact sample code for java.math.BigDecimal.toBigIntegerExact() definition code for java.math.BigDecimal.toBigIntegerExact() ()
          Converts this BigDecimal to a BigInteger, checking for lost information.
 String sample code for java.lang.String definition code for java.lang.String toEngineeringString sample code for java.math.BigDecimal.toEngineeringString() definition code for java.math.BigDecimal.toEngineeringString() ()
          Returns a string representation of this BigDecimal, using engineering notation if an exponent is needed.
 String sample code for java.lang.String definition code for java.lang.String toPlainString sample code for java.math.BigDecimal.toPlainString() definition code for java.math.BigDecimal.toPlainString() ()
          Returns a string representation of this BigDecimal without an exponent field.
 String sample code for java.lang.String definition code for java.lang.String toString sample code for java.math.BigDecimal.toString() definition code for java.math.BigDecimal.toString() ()
          Returns the string representation of this BigDecimal, using scientific notation if an exponent is needed.
 BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal ulp sample code for java.math.BigDecimal.ulp() definition code for java.math.BigDecimal.ulp() ()
          Returns the size of an ulp, a unit in the last place, of this BigDecimal.
 BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger unscaledValue sample code for java.math.BigDecimal.unscaledValue() definition code for java.math.BigDecimal.unscaledValue() ()
          Returns a BigInteger whose value is the unscaled value of this BigDecimal.
static BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal valueOf sample code for java.math.BigDecimal.valueOf(double) definition code for java.math.BigDecimal.valueOf(double) (double val)
          Translates a double into a BigDecimal, using the double's canonical string representation provided by the Double.toString(double) sample code for java.lang.Double.toString(double) definition code for java.lang.Double.toString(double) method.
static BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal valueOf sample code for java.math.BigDecimal.valueOf(long) definition code for java.math.BigDecimal.valueOf(long) (long val)
          Translates a long value into a BigDecimal with a scale of zero.
static BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal valueOf sample code for java.math.BigDecimal.valueOf(long, int) definition code for java.math.BigDecimal.valueOf(long, int) (long unscaledVal, int scale)
          Translates a long unscaled value and an int scale into a BigDecimal.
 
Methods inherited from class java.lang.Number sample code for java.lang.Number definition code for java.lang.Number
byteValue sample code for java.lang.Number.byteValue() definition code for java.lang.Number.byteValue() , shortValue sample code for java.lang.Number.shortValue() definition code for java.lang.Number.shortValue()
 
Methods inherited from class java.lang.Object sample code for java.lang.Object definition code for java.lang.Object
clone sample code for java.lang.Object.clone() definition code for java.lang.Object.clone() , finalize sample code for java.lang.Object.finalize() definition code for java.lang.Object.finalize() , getClass sample code for java.lang.Object.getClass() definition code for java.lang.Object.getClass() , notify sample code for java.lang.Object.notify() definition code for java.lang.Object.notify() , notifyAll sample code for java.lang.Object.notifyAll() definition code for java.lang.Object.notifyAll() , wait sample code for java.lang.Object.wait() definition code for java.lang.Object.wait() , wait sample code for java.lang.Object.wait(long) definition code for java.lang.Object.wait(long) , wait sample code for java.lang.Object.wait(long, int) definition code for java.lang.Object.wait(long, int)
 

Field Detail

ZERO sample code for java.math.BigDecimal.ZERO

public static final BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  ZERO
The value 0, with a scale of 0.

Since:
1.5

ONE sample code for java.math.BigDecimal.ONE

public static final BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  ONE
The value 1, with a scale of 0.

Since:
1.5

TEN sample code for java.math.BigDecimal.TEN

public static final BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  TEN
The value 10, with a scale of 0.

Since:
1.5

ROUND_UP sample code for java.math.BigDecimal.ROUND_UP

public static final int ROUND_UP
Rounding mode to round away from zero. Always increments the digit prior to a nonzero discarded fraction. Note that this rounding mode never decreases the magnitude of the calculated value.

See Also:
Constant Field Values

ROUND_DOWN sample code for java.math.BigDecimal.ROUND_DOWN

public static final int ROUND_DOWN
Rounding mode to round towards zero. Never increments the digit prior to a discarded fraction (i.e., truncates). Note that this rounding mode never increases the magnitude of the calculated value.

See Also:
Constant Field Values

ROUND_CEILING sample code for java.math.BigDecimal.ROUND_CEILING

public static final int ROUND_CEILING
Rounding mode to round towards positive infinity. If the BigDecimal is positive, behaves as for ROUND_UP; if negative, behaves as for ROUND_DOWN. Note that this rounding mode never decreases the calculated value.

See Also:
Constant Field Values

ROUND_FLOOR sample code for java.math.BigDecimal.ROUND_FLOOR

public static final int ROUND_FLOOR
Rounding mode to round towards negative infinity. If the BigDecimal is positive, behave as for ROUND_DOWN; if negative, behave as for ROUND_UP. Note that this rounding mode never increases the calculated value.

See Also:
Constant Field Values

ROUND_HALF_UP sample code for java.math.BigDecimal.ROUND_HALF_UP

public static final int ROUND_HALF_UP
Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round up. Behaves as for ROUND_UP if the discarded fraction is >= 0.5; otherwise, behaves as for ROUND_DOWN. Note that this is the rounding mode that most of us were taught in grade school.

See Also:
Constant Field Values

ROUND_HALF_DOWN sample code for java.math.BigDecimal.ROUND_HALF_DOWN

public static final int ROUND_HALF_DOWN
Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round down. Behaves as for ROUND_UP if the discarded fraction is > 0.5; otherwise, behaves as for ROUND_DOWN.

See Also:
Constant Field Values

ROUND_HALF_EVEN sample code for java.math.BigDecimal.ROUND_HALF_EVEN

public static final int ROUND_HALF_EVEN
Rounding mode to round towards the "nearest neighbor" unless both neighbors are equidistant, in which case, round towards the even neighbor. Behaves as for ROUND_HALF_UP if the digit to the left of the discarded fraction is odd; behaves as for ROUND_HALF_DOWN if it's even. Note that this is the rounding mode that minimizes cumulative error when applied repeatedly over a sequence of calculations.

See Also:
Constant Field Values

ROUND_UNNECESSARY sample code for java.math.BigDecimal.ROUND_UNNECESSARY

public static final int ROUND_UNNECESSARY
Rounding mode to assert that the requested operation has an exact result, hence no rounding is necessary. If this rounding mode is specified on an operation that yields an inexact result, an ArithmeticException is thrown.

See Also:
Constant Field Values
Constructor Detail

BigDecimal sample code for java.math.BigDecimal(char[], int, int) definition code for java.math.BigDecimal(char[], int, int)

public BigDecimal(char[] in,
                  int offset,
                  int len)
Translates a character array representation of a BigDecimal into a BigDecimal, accepting the same sequence of characters as the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor, while allowing a sub-array to be specified.

Note that if the sequence of characters is already available within a character array, using this constructor is faster than converting the char array to string and using the BigDecimal(String) constructor .

Parameters:
in - char array that is the source of characters.
offset - first character in the array to inspect.
len - number of characters to consider.
Throws:
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if in is not a valid representation of a BigDecimal or the defined subarray is not wholly within in.
Since:
1.5

BigDecimal sample code for java.math.BigDecimal(char[], int, int, java.math.MathContext) definition code for java.math.BigDecimal(char[], int, int, java.math.MathContext)

public BigDecimal(char[] in,
                  int offset,
                  int len,
                  MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Translates a character array representation of a BigDecimal into a BigDecimal, accepting the same sequence of characters as the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor, while allowing a sub-array to be specified and with rounding according to the context settings.

Note that if the sequence of characters is already available within a character array, using this constructor is faster than converting the char array to string and using the BigDecimal(String) constructor .

Parameters:
in - char array that is the source of characters.
offset - first character in the array to inspect.
len - number of characters to consider..
mc - the context to use.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if in is not a valid representation of a BigDecimal or the defined subarray is not wholly within in.
Since:
1.5

BigDecimal sample code for java.math.BigDecimal(char[]) definition code for java.math.BigDecimal(char[])

public BigDecimal(char[] in)
Translates a character array representation of a BigDecimal into a BigDecimal, accepting the same sequence of characters as the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor.

Note that if the sequence of characters is already available as a character array, using this constructor is faster than converting the char array to string and using the BigDecimal(String) constructor .

Parameters:
in - char array that is the source of characters.
Throws:
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if in is not a valid representation of a BigDecimal.
Since:
1.5

BigDecimal sample code for java.math.BigDecimal(char[], java.math.MathContext) definition code for java.math.BigDecimal(char[], java.math.MathContext)

public BigDecimal(char[] in,
                  MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Translates a character array representation of a BigDecimal into a BigDecimal, accepting the same sequence of characters as the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor and with rounding according to the context settings.

Note that if the sequence of characters is already available as a character array, using this constructor is faster than converting the char array to string and using the BigDecimal(String) constructor .

Parameters:
in - char array that is the source of characters.
mc - the context to use.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if in is not a valid representation of a BigDecimal.
Since:
1.5

BigDecimal sample code for java.math.BigDecimal(java.lang.String) definition code for java.math.BigDecimal(java.lang.String)

public BigDecimal(String sample code for java.lang.String definition code for java.lang.String  val)
Translates the string representation of a BigDecimal into a BigDecimal. The string representation consists of an optional sign, '+' ('\u002B') or '-' ('\u002D'), followed by a sequence of zero or more decimal digits ("the integer"), optionally followed by a fraction, optionally followed by an exponent.

The fraction consists of a decimal point followed by zero or more decimal digits. The string must contain at least one digit in either the integer or the fraction. The number formed by the sign, the integer and the fraction is referred to as the significand.

The exponent consists of the character 'e' ('\u0075') or 'E' ('\u0045') followed by one or more decimal digits. The value of the exponent must lie between -Integer.MAX_VALUE sample code for java.lang.Integer.MAX_VALUE definition code for java.lang.Integer.MAX_VALUE (Integer.MIN_VALUE sample code for java.lang.Integer.MIN_VALUE definition code for java.lang.Integer.MIN_VALUE +1) and Integer.MAX_VALUE sample code for java.lang.Integer.MAX_VALUE definition code for java.lang.Integer.MAX_VALUE , inclusive.

More formally, the strings this constructor accepts are described by the following grammar:

BigDecimalString:
Signopt Significand Exponentopt

Sign:
+
-

Significand:
IntegerPart . FractionPartopt
. FractionPart
IntegerPart

IntegerPart:
Digits

FractionPart:
Digits

Exponent:
ExponentIndicator SignedInteger

ExponentIndicator:
e
E

SignedInteger:
Signopt Digits

Digits:
Digit
Digits Digit

Digit:
any character for which Character.isDigit(char) sample code for java.lang.Character.isDigit(char) definition code for java.lang.Character.isDigit(char) returns true, including 0, 1, 2 ...

The scale of the returned BigDecimal will be the number of digits in the fraction, or zero if the string contains no decimal point, subject to adjustment for any exponent; if the string contains an exponent, the exponent is subtracted from the scale. The value of the resulting scale must lie between Integer.MIN_VALUE and Integer.MAX_VALUE, inclusive.

The character-to-digit mapping is provided by Character.digit(char, int) sample code for java.lang.Character.digit(char, int) definition code for java.lang.Character.digit(char, int) set to convert to radix 10. The String may not contain any extraneous characters (whitespace, for example).

Examples:
The value of the returned BigDecimal is equal to significand × 10 exponent. For each string on the left, the resulting representation [BigInteger, scale] is shown on the right.

 "0"            [0,0]
 "0.00"         [0,2]
 "123"          [123,0]
 "-123"         [-123,0]
 "1.23E3"       [123,-1]
 "1.23E+3"      [123,-1]
 "12.3E+7"      [123,-6]
 "12.0"         [120,1]
 "12.3"         [123,1]
 "0.00123"      [123,5]
 "-1.23E-12"    [-123,14]
 "1234.5E-4"    [12345,5]
 "0E+7"         [0,-7]
 "-0"           [0,0]
 

Note: For values other than float and double NaN and ±Infinity, this constructor is compatible with the values returned by Float.toString(float) sample code for java.lang.Float.toString(float) definition code for java.lang.Float.toString(float) and Double.toString(double) sample code for java.lang.Double.toString(double) definition code for java.lang.Double.toString(double) . This is generally the preferred way to convert a float or double into a BigDecimal, as it doesn't suffer from the unpredictability of the BigDecimal(double) sample code for java.math.BigDecimal.BigDecimal(double) definition code for java.math.BigDecimal.BigDecimal(double) constructor.

Parameters:
val - String representation of BigDecimal.
Throws:
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if val is not a valid representation of a BigDecimal.

BigDecimal sample code for java.math.BigDecimal(java.lang.String, java.math.MathContext) definition code for java.math.BigDecimal(java.lang.String, java.math.MathContext)

public BigDecimal(String sample code for java.lang.String definition code for java.lang.String  val,
                  MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Translates the string representation of a BigDecimal into a BigDecimal, accepting the same strings as the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor, with rounding according to the context settings.

Parameters:
val - string representation of a BigDecimal.
mc - the context to use.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if val is not a valid representation of a BigDecimal.
Since:
1.5

BigDecimal sample code for java.math.BigDecimal(double) definition code for java.math.BigDecimal(double)

public BigDecimal(double val)
Translates a double into a BigDecimal which is the exact decimal representation of the double's binary floating-point value. The scale of the returned BigDecimal is the smallest value such that (10scale × val) is an integer.

Notes:

  1. The results of this constructor can be somewhat unpredictable. One might assume that writing new BigDecimal(0.1) in Java creates a BigDecimal which is exactly equal to 0.1 (an unscaled value of 1, with a scale of 1), but it is actually equal to 0.1000000000000000055511151231257827021181583404541015625. This is because 0.1 cannot be represented exactly as a double (or, for that matter, as a binary fraction of any finite length). Thus, the value that is being passed in to the constructor is not exactly equal to 0.1, appearances notwithstanding.
  2. The String constructor, on the other hand, is perfectly predictable: writing new BigDecimal("0.1") creates a BigDecimal which is exactly equal to 0.1, as one would expect. Therefore, it is generally recommended that the String constructor sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) be used in preference to this one.
  3. When a double must be used as a source for a BigDecimal, note that this constructor provides an exact conversion; it does not give the same result as converting the double to a String using the Double.toString(double) sample code for java.lang.Double.toString(double) definition code for java.lang.Double.toString(double) method and then using the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor. To get that result, use the static valueOf(double) sample code for java.math.BigDecimal.valueOf(double) definition code for java.math.BigDecimal.valueOf(double) method.

Parameters:
val - double value to be converted to BigDecimal.
Throws:
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if val is infinite or NaN.

BigDecimal sample code for java.math.BigDecimal(double, java.math.MathContext) definition code for java.math.BigDecimal(double, java.math.MathContext)

public BigDecimal(double val,
                  MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Translates a double into a BigDecimal, with rounding according to the context settings. The scale of the BigDecimal is the smallest value such that (10scale × val) is an integer.

The results of this constructor can be somewhat unpredictable and its use is generally not recommended; see the notes under the BigDecimal(double) sample code for java.math.BigDecimal.BigDecimal(double) definition code for java.math.BigDecimal.BigDecimal(double) constructor.

Parameters:
val - double value to be converted to BigDecimal.
mc - the context to use.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the RoundingMode is UNNECESSARY.
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if val is infinite or NaN.
Since:
1.5

BigDecimal sample code for java.math.BigDecimal(java.math.BigInteger) definition code for java.math.BigDecimal(java.math.BigInteger)

public BigDecimal(BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger  val)
Translates a BigInteger into a BigDecimal. The scale of the BigDecimal is zero.

Parameters:
val - BigInteger value to be converted to BigDecimal.

BigDecimal sample code for java.math.BigDecimal(java.math.BigInteger, java.math.MathContext) definition code for java.math.BigDecimal(java.math.BigInteger, java.math.MathContext)

public BigDecimal(BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger  val,
                  MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Translates a BigInteger into a BigDecimal rounding according to the context settings. The scale of the BigDecimal is zero.

Parameters:
val - BigInteger value to be converted to BigDecimal.
mc - the context to use.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.
Since:
1.5

BigDecimal sample code for java.math.BigDecimal(java.math.BigInteger, int) definition code for java.math.BigDecimal(java.math.BigInteger, int)

public BigDecimal(BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger  unscaledVal,
                  int scale)
Translates a BigInteger unscaled value and an int scale into a BigDecimal. The value of the BigDecimal is (unscaledVal × 10-scale).

Parameters:
unscaledVal - unscaled value of the BigDecimal.
scale - scale of the BigDecimal.

BigDecimal sample code for java.math.BigDecimal(java.math.BigInteger, int, java.math.MathContext) definition code for java.math.BigDecimal(java.math.BigInteger, int, java.math.MathContext)

public BigDecimal(BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger  unscaledVal,
                  int scale,
                  MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Translates a BigInteger unscaled value and an int scale into a BigDecimal, with rounding according to the context settings. The value of the BigDecimal is (unscaledVal × 10-scale), rounded according to the precision and rounding mode settings.

Parameters:
unscaledVal - unscaled value of the BigDecimal.
scale - scale of the BigDecimal.
mc - the context to use.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.
Since:
1.5

BigDecimal sample code for java.math.BigDecimal(int) definition code for java.math.BigDecimal(int)

public BigDecimal(int val)
Translates an int into a BigDecimal. The scale of the BigDecimal is zero.

Parameters:
val - int value to be converted to BigDecimal.
Since:
1.5

BigDecimal sample code for java.math.BigDecimal(int, java.math.MathContext) definition code for java.math.BigDecimal(int, java.math.MathContext)

public BigDecimal(int val,
                  MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Translates an int into a BigDecimal, with rounding according to the context settings. The scale of the BigDecimal, before any rounding, is zero.

Parameters:
val - int value to be converted to BigDecimal.
mc - the context to use.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.
Since:
1.5

BigDecimal sample code for java.math.BigDecimal(long) definition code for java.math.BigDecimal(long)

public BigDecimal(long val)
Translates a long into a BigDecimal. The scale of the BigDecimal is zero.

Parameters:
val - long value to be converted to BigDecimal.
Since:
1.5

BigDecimal sample code for java.math.BigDecimal(long, java.math.MathContext) definition code for java.math.BigDecimal(long, java.math.MathContext)

public BigDecimal(long val,
                  MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Translates a long into a BigDecimal, with rounding according to the context settings. The scale of the BigDecimal, before any rounding, is zero.

Parameters:
val - long value to be converted to BigDecimal.
mc - the context to use.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.
Since:
1.5
Method Detail

valueOf sample code for java.math.BigDecimal.valueOf(long, int) definition code for java.math.BigDecimal.valueOf(long, int)

public static BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  valueOf(long unscaledVal,
                                 int scale)
Translates a long unscaled value and an int scale into a BigDecimal. This "static factory method" is provided in preference to a (long, int) constructor because it allows for reuse of frequently used BigDecimal values..

Parameters:
unscaledVal - unscaled value of the BigDecimal.
scale - scale of the BigDecimal.
Returns:
a BigDecimal whose value is (unscaledVal × 10-scale).

valueOf sample code for java.math.BigDecimal.valueOf(long) definition code for java.math.BigDecimal.valueOf(long)

public static BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  valueOf(long val)
Translates a long value into a BigDecimal with a scale of zero. This "static factory method" is provided in preference to a (long) constructor because it allows for reuse of frequently used BigDecimal values.

Parameters:
val - value of the BigDecimal.
Returns:
a BigDecimal whose value is val.

valueOf sample code for java.math.BigDecimal.valueOf(double) definition code for java.math.BigDecimal.valueOf(double)

public static BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  valueOf(double val)
Translates a double into a BigDecimal, using the double's canonical string representation provided by the Double.toString(double) sample code for java.lang.Double.toString(double) definition code for java.lang.Double.toString(double) method.

Note: This is generally the preferred way to convert a double (or float) into a BigDecimal, as the value returned is equal to that resulting from constructing a BigDecimal from the result of using Double.toString(double) sample code for java.lang.Double.toString(double) definition code for java.lang.Double.toString(double) .

Parameters:
val - double to convert to a BigDecimal.
Returns:
a BigDecimal whose value is equal to or approximately equal to the value of val.
Throws:
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if val is infinite or NaN.
Since:
1.5

add sample code for java.math.BigDecimal.add(java.math.BigDecimal) definition code for java.math.BigDecimal.add(java.math.BigDecimal)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  add(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  augend)
Returns a BigDecimal whose value is (this + augend), and whose scale is max(this.scale(), augend.scale()).

Parameters:
augend - value to be added to this BigDecimal.
Returns:
this + augend

add sample code for java.math.BigDecimal.add(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.add(java.math.BigDecimal, java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  add(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  augend,
                      MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a BigDecimal whose value is (this + augend), with rounding according to the context settings. If either number is zero and the precision setting is nonzero then the other number, rounded if necessary, is used as the result.

Parameters:
augend - value to be added to this BigDecimal.
mc - the context to use.
Returns:
this + augend, rounded as necessary.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.
Since:
1.5

subtract sample code for java.math.BigDecimal.subtract(java.math.BigDecimal) definition code for java.math.BigDecimal.subtract(java.math.BigDecimal)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  subtract(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  subtrahend)
Returns a BigDecimal whose value is (this - subtrahend), and whose scale is max(this.scale(), subtrahend.scale()).

Parameters:
subtrahend - value to be subtracted from this BigDecimal.
Returns:
this - subtrahend

subtract sample code for java.math.BigDecimal.subtract(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.subtract(java.math.BigDecimal, java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  subtract(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  subtrahend,
                           MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a BigDecimal whose value is (this - subtrahend), with rounding according to the context settings. If subtrahend is zero then this, rounded if necessary, is used as the result. If this is zero then the result is subtrahend.negate(mc).

Parameters:
subtrahend - value to be subtracted from this BigDecimal.
mc - the context to use.
Returns:
this - subtrahend, rounded as necessary.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.
Since:
1.5

multiply sample code for java.math.BigDecimal.multiply(java.math.BigDecimal) definition code for java.math.BigDecimal.multiply(java.math.BigDecimal)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  multiply(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  multiplicand)
Returns a BigDecimal whose value is (this × multiplicand), and whose scale is (this.scale() + multiplicand.scale()).

Parameters:
multiplicand - value to be multiplied by this BigDecimal.
Returns:
this * multiplicand

multiply sample code for java.math.BigDecimal.multiply(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.multiply(java.math.BigDecimal, java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  multiply(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  multiplicand,
                           MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a BigDecimal whose value is (this × multiplicand), with rounding according to the context settings.

Parameters:
multiplicand - value to be multiplied by this BigDecimal.
mc - the context to use.
Returns:
this * multiplicand, rounded as necessary.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.
Since:
1.5

divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal, int, int) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, int, int)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divide(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor,
                         int scale,
                         int roundingMode)
Returns a BigDecimal whose value is (this / divisor), and whose scale is as specified. If rounding must be performed to generate a result with the specified scale, the specified rounding mode is applied.

The new divide(BigDecimal, int, RoundingMode) sample code for java.math.BigDecimal.divide(java.math.BigDecimal, int, java.math.RoundingMode) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, int, java.math.RoundingMode) method should be used in preference to this legacy method.

Parameters:
divisor - value by which this BigDecimal is to be divided.
scale - scale of the BigDecimal quotient to be returned.
roundingMode - rounding mode to apply.
Returns:
this / divisor
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if divisor is zero, roundingMode==ROUND_UNNECESSARY and the specified scale is insufficient to represent the result of the division exactly.
IllegalArgumentException sample code for java.lang.IllegalArgumentException definition code for java.lang.IllegalArgumentException - if roundingMode does not represent a valid rounding mode.
See Also:
ROUND_UP sample code for java.math.BigDecimal.ROUND_UP definition code for java.math.BigDecimal.ROUND_UP , ROUND_DOWN sample code for java.math.BigDecimal.ROUND_DOWN definition code for java.math.BigDecimal.ROUND_DOWN , ROUND_CEILING sample code for java.math.BigDecimal.ROUND_CEILING definition code for java.math.BigDecimal.ROUND_CEILING , ROUND_FLOOR sample code for java.math.BigDecimal.ROUND_FLOOR definition code for java.math.BigDecimal.ROUND_FLOOR , ROUND_HALF_UP sample code for java.math.BigDecimal.ROUND_HALF_UP definition code for java.math.BigDecimal.ROUND_HALF_UP , ROUND_HALF_DOWN sample code for java.math.BigDecimal.ROUND_HALF_DOWN definition code for java.math.BigDecimal.ROUND_HALF_DOWN , ROUND_HALF_EVEN sample code for java.math.BigDecimal.ROUND_HALF_EVEN definition code for java.math.BigDecimal.ROUND_HALF_EVEN , ROUND_UNNECESSARY sample code for java.math.BigDecimal.ROUND_UNNECESSARY definition code for java.math.BigDecimal.ROUND_UNNECESSARY

divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal, int, java.math.RoundingMode) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, int, java.math.RoundingMode)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divide(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor,
                         int scale,
                         RoundingMode sample code for java.math.RoundingMode definition code for java.math.RoundingMode  roundingMode)
Returns a BigDecimal whose value is (this / divisor), and whose scale is as specified. If rounding must be performed to generate a result with the specified scale, the specified rounding mode is applied.

Parameters:
divisor - value by which this BigDecimal is to be divided.
scale - scale of the BigDecimal quotient to be returned.
roundingMode - rounding mode to apply.
Returns:
this / divisor
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if divisor is zero, roundingMode==RoundingMode.UNNECESSARY and the specified scale is insufficient to represent the result of the division exactly.
Since:
1.5

divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal, int) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, int)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divide(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor,
                         int roundingMode)
Returns a BigDecimal whose value is (this / divisor), and whose scale is this.scale(). If rounding must be performed to generate a result with the given scale, the specified rounding mode is applied.

The new divide(BigDecimal, RoundingMode) sample code for java.math.BigDecimal.divide(java.math.BigDecimal, java.math.RoundingMode) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, java.math.RoundingMode) method should be used in preference to this legacy method.

Parameters:
divisor - value by which this BigDecimal is to be divided.
roundingMode - rounding mode to apply.
Returns:
this / divisor
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if divisor==0, or roundingMode==ROUND_UNNECESSARY and this.scale() is insufficient to represent the result of the division exactly.
IllegalArgumentException sample code for java.lang.IllegalArgumentException definition code for java.lang.IllegalArgumentException - if roundingMode does not represent a valid rounding mode.
See Also:
ROUND_UP sample code for java.math.BigDecimal.ROUND_UP definition code for java.math.BigDecimal.ROUND_UP , ROUND_DOWN sample code for java.math.BigDecimal.ROUND_DOWN definition code for java.math.BigDecimal.ROUND_DOWN , ROUND_CEILING sample code for java.math.BigDecimal.ROUND_CEILING definition code for java.math.BigDecimal.ROUND_CEILING , ROUND_FLOOR sample code for java.math.BigDecimal.ROUND_FLOOR definition code for java.math.BigDecimal.ROUND_FLOOR , ROUND_HALF_UP sample code for java.math.BigDecimal.ROUND_HALF_UP definition code for java.math.BigDecimal.ROUND_HALF_UP , ROUND_HALF_DOWN sample code for java.math.BigDecimal.ROUND_HALF_DOWN definition code for java.math.BigDecimal.ROUND_HALF_DOWN , ROUND_HALF_EVEN sample code for java.math.BigDecimal.ROUND_HALF_EVEN definition code for java.math.BigDecimal.ROUND_HALF_EVEN , ROUND_UNNECESSARY sample code for java.math.BigDecimal.ROUND_UNNECESSARY definition code for java.math.BigDecimal.ROUND_UNNECESSARY

divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal, java.math.RoundingMode) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, java.math.RoundingMode)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divide(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor,
                         RoundingMode sample code for java.math.RoundingMode definition code for java.math.RoundingMode  roundingMode)
Returns a BigDecimal whose value is (this / divisor), and whose scale is this.scale(). If rounding must be performed to generate a result with the given scale, the specified rounding mode is applied.

Parameters:
divisor - value by which this BigDecimal is to be divided.
roundingMode - rounding mode to apply.
Returns:
this / divisor
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if divisor==0, or roundingMode==RoundingMode.UNNECESSARY and this.scale() is insufficient to represent the result of the division exactly.

divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal) definition code for java.math.BigDecimal.divide(java.math.BigDecimal)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divide(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor)
Returns a BigDecimal whose value is (this / divisor), and whose preferred scale is (this.scale() - divisor.scale()); if the exact quotient cannot be represented (because it has a non-terminating decimal expansion) an ArithmeticException is thrown.

Parameters:
divisor - value by which this BigDecimal is to be divided.
Returns:
this / divisor
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the exact quotient does not have a terminating decimal expansion
Since:
1.5

divide sample code for java.math.BigDecimal.divide(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.divide(java.math.BigDecimal, java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divide(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor,
                         MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a BigDecimal whose value is (this / divisor), with rounding according to the context settings.

Parameters:
divisor - value by which this BigDecimal is to be divided.
mc - the context to use.
Returns:
this / divisor, rounded as necessary.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY or mc.precision == 0 and the quotient has a non-terminating decimal expansion.
Since:
1.5

divideToIntegralValue sample code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal) definition code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divideToIntegralValue(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor)
Returns a BigDecimal whose value is the integer part of the quotient (this / divisor) rounded down. The preferred scale of the result is (this.scale() - divisor.scale()).

Parameters:
divisor - value by which this BigDecimal is to be divided.
Returns:
The integer part of this / divisor.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if divisor==0
Since:
1.5

divideToIntegralValue sample code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal, java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divideToIntegralValue(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor,
                                        MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a BigDecimal whose value is the integer part of (this / divisor). Since the integer part of the exact quotient does not depend on the rounding mode, the rounding mode does not affect the values returned by this method. The preferred scale of the result is (this.scale() - divisor.scale()). An ArithmeticException is thrown if the integer part of the exact quotient needs more than mc.precision digits.

Parameters:
divisor - value by which this BigDecimal is to be divided.
mc - the context to use.
Returns:
The integer part of this / divisor.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if divisor==0
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if mc.precision > 0 and the result requires a precision of more than mc.precision digits.
Since:
1.5

remainder sample code for java.math.BigDecimal.remainder(java.math.BigDecimal) definition code for java.math.BigDecimal.remainder(java.math.BigDecimal)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  remainder(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor)
Returns a BigDecimal whose value is (this % divisor).

The remainder is given by this.subtract(this.divideToIntegralValue(divisor).multiply(divisor)). Note that this is not the modulo operation (the result can be negative).

Parameters:
divisor - value by which this BigDecimal is to be divided.
Returns:
this % divisor.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if divisor==0
Since:
1.5

remainder sample code for java.math.BigDecimal.remainder(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.remainder(java.math.BigDecimal, java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  remainder(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor,
                            MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a BigDecimal whose value is (this % divisor), with rounding according to the context settings. The MathContext settings affect the implicit divide used to compute the remainder. The remainder computation itself is by definition exact. Therefore, the remainder may contain more than mc.getPrecision() digits.

The remainder is given by this.subtract(this.divideToIntegralValue(divisor, mc).multiply(divisor)). Note that this is not the modulo operation (the result can be negative).

Parameters:
divisor - value by which this BigDecimal is to be divided.
mc - the context to use.
Returns:
this % divisor, rounded as necessary.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if divisor==0
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY, or mc.precision > 0 and the result of this.divideToIntgralValue(divisor) would require a precision of more than mc.precision digits.
Since:
1.5
See Also:
divideToIntegralValue(java.math.BigDecimal, java.math.MathContext) sample code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal, java.math.MathContext)

divideAndRemainder sample code for java.math.BigDecimal.divideAndRemainder(java.math.BigDecimal) definition code for java.math.BigDecimal.divideAndRemainder(java.math.BigDecimal)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal [] divideAndRemainder(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor)
Returns a two-element BigDecimal array containing the result of divideToIntegralValue followed by the result of remainder on the two operands.

Note that if both the integer quotient and remainder are needed, this method is faster than using the divideToIntegralValue and remainder methods separately because the division need only be carried out once.

Parameters:
divisor - value by which this BigDecimal is to be divided, and the remainder computed.
Returns:
a two element BigDecimal array: the quotient (the result of divideToIntegralValue) is the initial element and the remainder is the final element.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if divisor==0
Since:
1.5
See Also:
divideToIntegralValue(java.math.BigDecimal, java.math.MathContext) sample code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal, java.math.MathContext) , remainder(java.math.BigDecimal, java.math.MathContext) sample code for java.math.BigDecimal.remainder(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.remainder(java.math.BigDecimal, java.math.MathContext)

divideAndRemainder sample code for java.math.BigDecimal.divideAndRemainder(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.divideAndRemainder(java.math.BigDecimal, java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal [] divideAndRemainder(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  divisor,
                                       MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a two-element BigDecimal array containing the result of divideToIntegralValue followed by the result of remainder on the two operands calculated with rounding according to the context settings.

Note that if both the integer quotient and remainder are needed, this method is faster than using the divideToIntegralValue and remainder methods separately because the division need only be carried out once.

Parameters:
divisor - value by which this BigDecimal is to be divided, and the remainder computed.
mc - the context to use.
Returns:
a two element BigDecimal array: the quotient (the result of divideToIntegralValue) is the initial element and the remainder is the final element.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if divisor==0
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY, or mc.precision > 0 and the result of this.divideToIntgralValue(divisor) would require a precision of more than mc.precision digits.
Since:
1.5
See Also:
divideToIntegralValue(java.math.BigDecimal, java.math.MathContext) sample code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.divideToIntegralValue(java.math.BigDecimal, java.math.MathContext) , remainder(java.math.BigDecimal, java.math.MathContext) sample code for java.math.BigDecimal.remainder(java.math.BigDecimal, java.math.MathContext) definition code for java.math.BigDecimal.remainder(java.math.BigDecimal, java.math.MathContext)

pow sample code for java.math.BigDecimal.pow(int) definition code for java.math.BigDecimal.pow(int)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  pow(int n)
Returns a BigDecimal whose value is (thisn), The power is computed exactly, to unlimited precision.

The parameter n must be in the range 0 through 999999999, inclusive. ZERO.pow(0) returns ONE sample code for java.math.BigDecimal.ONE definition code for java.math.BigDecimal.ONE . Note that future releases may expand the allowable exponent range of this method.

Parameters:
n - power to raise this BigDecimal to.
Returns:
thisn
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if n is out of range.
Since:
1.5

pow sample code for java.math.BigDecimal.pow(int, java.math.MathContext) definition code for java.math.BigDecimal.pow(int, java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  pow(int n,
                      MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a BigDecimal whose value is (thisn). The current implementation uses the core algorithm defined in ANSI standard X3.274-1996 with rounding according to the context settings. In general, the returned numerical value is within two ulps of the exact numerical value for the chosen precision. Note that future releases may use a different algorithm with a decreased allowable error bound and increased allowable exponent range.

The X3.274-1996 algorithm is:

Parameters:
n - power to raise this BigDecimal to.
mc - the context to use.
Returns:
thisn using the ANSI standard X3.274-1996 algorithm
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY, or n is out of range.
Since:
1.5

abs sample code for java.math.BigDecimal.abs() definition code for java.math.BigDecimal.abs()

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  abs()
Returns a BigDecimal whose value is the absolute value of this BigDecimal, and whose scale is this.scale().

Returns:
abs(this)

abs sample code for java.math.BigDecimal.abs(java.math.MathContext) definition code for java.math.BigDecimal.abs(java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  abs(MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a BigDecimal whose value is the absolute value of this BigDecimal, with rounding according to the context settings.

Parameters:
mc - the context to use.
Returns:
abs(this), rounded as necessary.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.

negate sample code for java.math.BigDecimal.negate() definition code for java.math.BigDecimal.negate()

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  negate()
Returns a BigDecimal whose value is (-this), and whose scale is this.scale().

Returns:
-this.

negate sample code for java.math.BigDecimal.negate(java.math.MathContext) definition code for java.math.BigDecimal.negate(java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  negate(MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a BigDecimal whose value is (-this), with rounding according to the context settings.

Parameters:
mc - the context to use.
Returns:
-this, rounded as necessary.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if or the result is inexact but the rounding mode is UNNECESSARY.
Since:
1.5

plus sample code for java.math.BigDecimal.plus() definition code for java.math.BigDecimal.plus()

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  plus()
Returns a BigDecimal whose value is (+this), and whose scale is this.scale().

This method, which simply returns this BigDecimal is included for symmetry with the unary minus method negate() sample code for java.math.BigDecimal.negate() definition code for java.math.BigDecimal.negate() .

Returns:
this.
Since:
1.5
See Also:
negate() sample code for java.math.BigDecimal.negate() definition code for java.math.BigDecimal.negate()

plus sample code for java.math.BigDecimal.plus(java.math.MathContext) definition code for java.math.BigDecimal.plus(java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  plus(MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a BigDecimal whose value is (+this), with rounding according to the context settings.

The effect of this method is identical to that of the round(MathContext) sample code for java.math.BigDecimal.round(java.math.MathContext) definition code for java.math.BigDecimal.round(java.math.MathContext) method.

Parameters:
mc - the context to use.
Returns:
this, rounded as necessary. A zero result will have a scale of 0.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the result is inexact but the rounding mode is UNNECESSARY.
Since:
1.5
See Also:
round(MathContext) sample code for java.math.BigDecimal.round(java.math.MathContext) definition code for java.math.BigDecimal.round(java.math.MathContext)

signum sample code for java.math.BigDecimal.signum() definition code for java.math.BigDecimal.signum()

public int signum()
Returns the signum function of this BigDecimal.

Returns:
-1, 0, or 1 as the value of this BigDecimal is negative, zero, or positive.

scale sample code for java.math.BigDecimal.scale() definition code for java.math.BigDecimal.scale()

public int scale()
Returns the scale of this BigDecimal. If zero or positive, the scale is the number of digits to the right of the decimal point. If negative, the unscaled value of the number is multiplied by ten to the power of the negation of the scale. For example, a scale of -3 means the unscaled value is multiplied by 1000.

Returns:
the scale of this BigDecimal.

precision sample code for java.math.BigDecimal.precision() definition code for java.math.BigDecimal.precision()

public int precision()
Returns the precision of this BigDecimal. (The precision is the number of digits in the unscaled value.)

The precision of a zero value is 1.

Returns:
the precision of this BigDecimal.
Since:
1.5

unscaledValue sample code for java.math.BigDecimal.unscaledValue() definition code for java.math.BigDecimal.unscaledValue()

public BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger  unscaledValue()
Returns a BigInteger whose value is the unscaled value of this BigDecimal. (Computes (this * 10this.scale()).)

Returns:
the unscaled value of this BigDecimal.
Since:
1.2

round sample code for java.math.BigDecimal.round(java.math.MathContext) definition code for java.math.BigDecimal.round(java.math.MathContext)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  round(MathContext sample code for java.math.MathContext definition code for java.math.MathContext  mc)
Returns a BigDecimal rounded according to the MathContext settings. If the precision setting is 0 then no rounding takes place.

The effect of this method is identical to that of the plus(MathContext) sample code for java.math.BigDecimal.plus(java.math.MathContext) definition code for java.math.BigDecimal.plus(java.math.MathContext) method.

Parameters:
mc - the context to use.
Returns:
a BigDecimal rounded according to the MathContext settings.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the rounding mode is UNNECESSARY and the BigDecimal operation would require rounding.
Since:
1.5
See Also:
plus(MathContext) sample code for java.math.BigDecimal.plus(java.math.MathContext) definition code for java.math.BigDecimal.plus(java.math.MathContext)

setScale sample code for java.math.BigDecimal.setScale(int, java.math.RoundingMode) definition code for java.math.BigDecimal.setScale(int, java.math.RoundingMode)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  setScale(int newScale,
                           RoundingMode sample code for java.math.RoundingMode definition code for java.math.RoundingMode  roundingMode)
Returns a BigDecimal whose scale is the specified value, and whose unscaled value is determined by multiplying or dividing this BigDecimal's unscaled value by the appropriate power of ten to maintain its overall value. If the scale is reduced by the operation, the unscaled value must be divided (rather than multiplied), and the value may be changed; in this case, the specified rounding mode is applied to the division.

Parameters:
newScale - scale of the BigDecimal value to be returned.
roundingMode - The rounding mode to apply.
Returns:
a BigDecimal whose scale is the specified value, and whose unscaled value is determined by multiplying or dividing this BigDecimal's unscaled value by the appropriate power of ten to maintain its overall value.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if roundingMode==UNNECESSARY and the specified scaling operation would require rounding.
Since:
1.5
See Also:
RoundingMode sample code for java.math.RoundingMode definition code for java.math.RoundingMode

setScale sample code for java.math.BigDecimal.setScale(int, int) definition code for java.math.BigDecimal.setScale(int, int)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  setScale(int newScale,
                           int roundingMode)
Returns a BigDecimal whose scale is the specified value, and whose unscaled value is determined by multiplying or dividing this BigDecimal's unscaled value by the appropriate power of ten to maintain its overall value. If the scale is reduced by the operation, the unscaled value must be divided (rather than multiplied), and the value may be changed; in this case, the specified rounding mode is applied to the division.

Note that since BigDecimal objects are immutable, calls of this method do not result in the original object being modified, contrary to the usual convention of having methods named setX mutate field X. Instead, setScale returns an object with the proper scale; the returned object may or may not be newly allocated.

The new setScale(int, RoundingMode) sample code for java.math.BigDecimal.setScale(int, java.math.RoundingMode) definition code for java.math.BigDecimal.setScale(int, java.math.RoundingMode) method should be used in preference to this legacy method.

Parameters:
newScale - scale of the BigDecimal value to be returned.
roundingMode - The rounding mode to apply.
Returns:
a BigDecimal whose scale is the specified value, and whose unscaled value is determined by multiplying or dividing this BigDecimal's unscaled value by the appropriate power of ten to maintain its overall value.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if roundingMode==ROUND_UNNECESSARY and the specified scaling operation would require rounding.
IllegalArgumentException sample code for java.lang.IllegalArgumentException definition code for java.lang.IllegalArgumentException - if roundingMode does not represent a valid rounding mode.
See Also:
ROUND_UP sample code for java.math.BigDecimal.ROUND_UP definition code for java.math.BigDecimal.ROUND_UP , ROUND_DOWN sample code for java.math.BigDecimal.ROUND_DOWN definition code for java.math.BigDecimal.ROUND_DOWN , ROUND_CEILING sample code for java.math.BigDecimal.ROUND_CEILING definition code for java.math.BigDecimal.ROUND_CEILING , ROUND_FLOOR sample code for java.math.BigDecimal.ROUND_FLOOR definition code for java.math.BigDecimal.ROUND_FLOOR , ROUND_HALF_UP sample code for java.math.BigDecimal.ROUND_HALF_UP definition code for java.math.BigDecimal.ROUND_HALF_UP , ROUND_HALF_DOWN sample code for java.math.BigDecimal.ROUND_HALF_DOWN definition code for java.math.BigDecimal.ROUND_HALF_DOWN , ROUND_HALF_EVEN sample code for java.math.BigDecimal.ROUND_HALF_EVEN definition code for java.math.BigDecimal.ROUND_HALF_EVEN , ROUND_UNNECESSARY sample code for java.math.BigDecimal.ROUND_UNNECESSARY definition code for java.math.BigDecimal.ROUND_UNNECESSARY

setScale sample code for java.math.BigDecimal.setScale(int) definition code for java.math.BigDecimal.setScale(int)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  setScale(int newScale)
Returns a BigDecimal whose scale is the specified value, and whose value is numerically equal to this BigDecimal's. Throws an ArithmeticException if this is not possible.

This call is typically used to increase the scale, in which case it is guaranteed that there exists a BigDecimal of the specified scale and the correct value. The call can also be used to reduce the scale if the caller knows that the BigDecimal has sufficiently many zeros at the end of its fractional part (i.e., factors of ten in its integer value) to allow for the rescaling without changing its value.

This method returns the same result as the two-argument versions of setScale, but saves the caller the trouble of specifying a rounding mode in cases where it is irrelevant.

Note that since BigDecimal objects are immutable, calls of this method do not result in the original object being modified, contrary to the usual convention of having methods named setX mutate field X. Instead, setScale returns an object with the proper scale; the returned object may or may not be newly allocated.

Parameters:
newScale - scale of the BigDecimal value to be returned.
Returns:
a BigDecimal whose scale is the specified value, and whose unscaled value is determined by multiplying or dividing this BigDecimal's unscaled value by the appropriate power of ten to maintain its overall value.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the specified scaling operation would require rounding.
See Also:
setScale(int, int) sample code for java.math.BigDecimal.setScale(int, int) definition code for java.math.BigDecimal.setScale(int, int) , setScale(int, RoundingMode) sample code for java.math.BigDecimal.setScale(int, java.math.RoundingMode) definition code for java.math.BigDecimal.setScale(int, java.math.RoundingMode)

movePointLeft sample code for java.math.BigDecimal.movePointLeft(int) definition code for java.math.BigDecimal.movePointLeft(int)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  movePointLeft(int n)
Returns a BigDecimal which is equivalent to this one with the decimal point moved n places to the left. If n is non-negative, the call merely adds n to the scale. If n is negative, the call is equivalent to movePointRight(-n). The BigDecimal returned by this call has value (this × 10-n) and scale max(this.scale()+n, 0).

Parameters:
n - number of places to move the decimal point to the left.
Returns:
a BigDecimal which is equivalent to this one with the decimal point moved n places to the left.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if scale overflows.

movePointRight sample code for java.math.BigDecimal.movePointRight(int) definition code for java.math.BigDecimal.movePointRight(int)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  movePointRight(int n)
Returns a BigDecimal which is equivalent to this one with the decimal point moved n places to the right. If n is non-negative, the call merely subtracts n from the scale. If n is negative, the call is equivalent to movePointLeft(-n). The BigDecimal returned by this call has value (this × 10n) and scale max(this.scale()-n, 0).

Parameters:
n - number of places to move the decimal point to the right.
Returns:
a BigDecimal which is equivalent to this one with the decimal point moved n places to the right.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if scale overflows.

scaleByPowerOfTen sample code for java.math.BigDecimal.scaleByPowerOfTen(int) definition code for java.math.BigDecimal.scaleByPowerOfTen(int)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  scaleByPowerOfTen(int n)
Returns a BigDecimal whose numerical value is equal to (this * 10n). The scale of the result is (this.scale() - n).

Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if the scale would be outside the range of a 32-bit integer.
Since:
1.5

stripTrailingZeros sample code for java.math.BigDecimal.stripTrailingZeros() definition code for java.math.BigDecimal.stripTrailingZeros()

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  stripTrailingZeros()
Returns a BigDecimal which is numerically equal to this one but with any trailing zeros removed from the representation. For example, stripping the trailing zeros from the BigDecimal value 600.0, which has [BigInteger, scale] components equals to [6000, 1], yields 6E2 with [BigInteger, scale] components equals to [6, -2]

Returns:
a numerically equal BigDecimal with any trailing zeros removed.

compareTo sample code for java.math.BigDecimal.compareTo(java.math.BigDecimal) definition code for java.math.BigDecimal.compareTo(java.math.BigDecimal)

public int compareTo(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  val)
Compares this BigDecimal with the specified BigDecimal. Two BigDecimal objects that are equal in value but have a different scale (like 2.0 and 2.00) are considered equal by this method. This method is provided in preference to individual methods for each of the six boolean comparison operators (<, ==, >, >=, !=, <=). The suggested idiom for performing these comparisons is: (x.compareTo(y) <op> 0), where <op> is one of the six comparison operators.

Specified by:
compareTo sample code for java.lang.Comparable.compareTo(T) definition code for java.lang.Comparable.compareTo(T) in interface Comparable sample code for java.lang.Comparable definition code for java.lang.Comparable <BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal >
Parameters:
val - BigDecimal to which this BigDecimal is to be compared.
Returns:
-1, 0, or 1 as this BigDecimal is numerically less than, equal to, or greater than val.

equals sample code for java.math.BigDecimal.equals(java.lang.Object) definition code for java.math.BigDecimal.equals(java.lang.Object)

public boolean equals(Object sample code for java.lang.Object definition code for java.lang.Object  x)
Compares this BigDecimal with the specified Object for equality. Unlike compareTo sample code for java.math.BigDecimal.compareTo(java.math.BigDecimal) definition code for java.math.BigDecimal.compareTo(java.math.BigDecimal) , this method considers two BigDecimal objects equal only if they are equal in value and scale (thus 2.0 is not equal to 2.00 when compared by this method).

Overrides:
equals sample code for java.lang.Object.equals(java.lang.Object) definition code for java.lang.Object.equals(java.lang.Object) in class Object sample code for java.lang.Object definition code for java.lang.Object
Parameters:
x - Object to which this BigDecimal is to be compared.
Returns:
true if and only if the specified Object is a BigDecimal whose value and scale are equal to this BigDecimal's.
See Also:
compareTo(java.math.BigDecimal) sample code for java.math.BigDecimal.compareTo(java.math.BigDecimal) definition code for java.math.BigDecimal.compareTo(java.math.BigDecimal) , hashCode() sample code for java.math.BigDecimal.hashCode() definition code for java.math.BigDecimal.hashCode()

min sample code for java.math.BigDecimal.min(java.math.BigDecimal) definition code for java.math.BigDecimal.min(java.math.BigDecimal)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  min(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  val)
Returns the minimum of this BigDecimal and val.

Parameters:
val - value with which the minimum is to be computed.
Returns:
the BigDecimal whose value is the lesser of this BigDecimal and val. If they are equal, as defined by the compareTo sample code for java.math.BigDecimal.compareTo(java.math.BigDecimal) definition code for java.math.BigDecimal.compareTo(java.math.BigDecimal) method, this is returned.
See Also:
compareTo(java.math.BigDecimal) sample code for java.math.BigDecimal.compareTo(java.math.BigDecimal) definition code for java.math.BigDecimal.compareTo(java.math.BigDecimal)

max sample code for java.math.BigDecimal.max(java.math.BigDecimal) definition code for java.math.BigDecimal.max(java.math.BigDecimal)

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  max(BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  val)
Returns the maximum of this BigDecimal and val.

Parameters:
val - value with which the maximum is to be computed.
Returns:
the BigDecimal whose value is the greater of this BigDecimal and val. If they are equal, as defined by the compareTo sample code for java.math.BigDecimal.compareTo(java.math.BigDecimal) definition code for java.math.BigDecimal.compareTo(java.math.BigDecimal) method, this is returned.
See Also:
compareTo(java.math.BigDecimal) sample code for java.math.BigDecimal.compareTo(java.math.BigDecimal) definition code for java.math.BigDecimal.compareTo(java.math.BigDecimal)

hashCode sample code for java.math.BigDecimal.hashCode() definition code for java.math.BigDecimal.hashCode()

public int hashCode()
Returns the hash code for this BigDecimal. Note that two BigDecimal objects that are numerically equal but differ in scale (like 2.0 and 2.00) will generally not have the same hash code.

Overrides:
hashCode sample code for java.lang.Object.hashCode() definition code for java.lang.Object.hashCode() in class Object sample code for java.lang.Object definition code for java.lang.Object
Returns:
hash code for this BigDecimal.
See Also:
equals(Object) sample code for java.math.BigDecimal.equals(java.lang.Object) definition code for java.math.BigDecimal.equals(java.lang.Object)

toString sample code for java.math.BigDecimal.toString() definition code for java.math.BigDecimal.toString()

public String sample code for java.lang.String definition code for java.lang.String  toString()
Returns the string representation of this BigDecimal, using scientific notation if an exponent is needed.

A standard canonical string form of the BigDecimal is created as though by the following steps: first, the absolute value of the unscaled value of the BigDecimal is converted to a string in base ten using the characters '0' through '9' with no leading zeros (except if its value is zero, in which case a single '0' character is used).

Next, an adjusted exponent is calculated; this is the negated scale, plus the number of characters in the converted unscaled value, less one. That is, -scale+(ulength-1), where ulength is the length of the absolute value of the unscaled value in decimal digits (its precision).

If the scale is greater than or equal to zero and the adjusted exponent is greater than or equal to -6, the number will be converted to a character form without using exponential notation. In this case, if the scale is zero then no decimal point is added and if the scale is positive a decimal point will be inserted with the scale specifying the number of characters to the right of the decimal point. '0' characters are added to the left of the converted unscaled value as necessary. If no character precedes the decimal point after this insertion then a conventional '0' character is prefixed.

Otherwise (that is, if the scale is negative, or the adjusted exponent is less than -6), the number will be converted to a character form using exponential notation. In this case, if the converted BigInteger has more than one digit a decimal point is inserted after the first digit. An exponent in character form is then suffixed to the converted unscaled value (perhaps with inserted decimal point); this comprises the letter 'E' followed immediately by the adjusted exponent converted to a character form. The latter is in base ten, using the characters '0' through '9' with no leading zeros, and is always prefixed by a sign character '-' ('\u002D') if the adjusted exponent is negative, '+' ('\u002B') otherwise).

Finally, the entire string is prefixed by a minus sign character '-' ('\u002D') if the unscaled value is less than zero. No sign character is prefixed if the unscaled value is zero or positive.

Examples:

For each representation [unscaled value, scale] on the left, the resulting string is shown on the right.

 [123,0]      "123"
 [-123,0]     "-123"
 [123,-1]     "1.23E+3"
 [123,-3]     "1.23E+5"
 [123,1]      "12.3"
 [123,5]      "0.00123"
 [123,10]     "1.23E-8"
 [-123,12]    "-1.23E-10"
 
Notes:
  1. There is a one-to-one mapping between the distinguishable BigDecimal values and the result of this conversion. That is, every distinguishable BigDecimal value (unscaled value and scale) has a unique string representation as a result of using toString. If that string representation is converted back to a BigDecimal using the BigDecimal(String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) constructor, then the original value will be recovered.
  2. The string produced for a given number is always the same; it is not affected by locale. This means that it can be used as a canonical string representation for exchanging decimal data, or as a key for a Hashtable, etc. Locale-sensitive number formatting and parsing is handled by the NumberFormat sample code for java.text.NumberFormat definition code for java.text.NumberFormat class and its subclasses.
  3. The toEngineeringString() sample code for java.math.BigDecimal.toEngineeringString() definition code for java.math.BigDecimal.toEngineeringString() method may be used for presenting numbers with exponents in engineering notation, and the setScale sample code for java.math.BigDecimal.setScale(int, java.math.RoundingMode) definition code for java.math.BigDecimal.setScale(int, java.math.RoundingMode) method may be used for rounding a BigDecimal so it has a known number of digits after the decimal point.
  4. The digit-to-character mapping provided by Character.forDigit is used.

Overrides:
toString sample code for java.lang.Object.toString() definition code for java.lang.Object.toString() in class Object sample code for java.lang.Object definition code for java.lang.Object
Returns:
string representation of this BigDecimal.
See Also:
Character.forDigit(int, int) sample code for java.lang.Character.forDigit(int, int) definition code for java.lang.Character.forDigit(int, int) , BigDecimal(java.lang.String) sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String)

toEngineeringString sample code for java.math.BigDecimal.toEngineeringString() definition code for java.math.BigDecimal.toEngineeringString()

public String sample code for java.lang.String definition code for java.lang.String  toEngineeringString()
Returns a string representation of this BigDecimal, using engineering notation if an exponent is needed.

Returns a string that represents the BigDecimal as described in the toString() sample code for java.math.BigDecimal.toString() definition code for java.math.BigDecimal.toString() method, except that if exponential notation is used, the power of ten is adjusted to be a multiple of three (engineering notation) such that the integer part of nonzero values will be in the range 1 through 999. If exponential notation is used for zero values, a decimal point and one or two fractional zero digits are used so that the scale of the zero value is preserved. Note that unlike the output of toString() sample code for java.math.BigDecimal.toString() definition code for java.math.BigDecimal.toString() , the output of this method is not guaranteed to recover the same [integer, scale] pair of this BigDecimal if the output string is converting back to a BigDecimal using the string constructor sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) . The result of this method meets the weaker constraint of always producing a numerically equal result from applying the string constructor to the method's output.

Returns:
string representation of this BigDecimal, using engineering notation if an exponent is needed.
Since:
1.5

toPlainString sample code for java.math.BigDecimal.toPlainString() definition code for java.math.BigDecimal.toPlainString()

public String sample code for java.lang.String definition code for java.lang.String  toPlainString()
Returns a string representation of this BigDecimal without an exponent field. For values with a positive scale, the number of digits to the right of the decimal point is used to indicate scale. For values with a zero or negative scale, the resulting string is generated as if the value were converted to a numerically equal value with zero scale and as if all the trailing zeros of the zero scale value were present in the result. The entire string is prefixed by a minus sign character '-' ('\u002D') if the unscaled value is less than zero. No sign character is prefixed if the unscaled value is zero or positive. Note that if the result of this method is passed to the string constructor sample code for java.math.BigDecimal.BigDecimal(java.lang.String) definition code for java.math.BigDecimal.BigDecimal(java.lang.String) , only the numerical value of this BigDecimal will necessarily be recovered; the representation of the new BigDecimal may have a different scale. In particular, if this BigDecimal has a positive scale, the string resulting from this method will have a scale of zero when processed by the string constructor. (This method behaves analogously to the toString method in 1.4 and earlier releases.)

Returns:
a string representation of this BigDecimal without an exponent field.
Since:
1.5
See Also:
toString() sample code for java.math.BigDecimal.toString() definition code for java.math.BigDecimal.toString() , toEngineeringString() sample code for java.math.BigDecimal.toEngineeringString() definition code for java.math.BigDecimal.toEngineeringString()

toBigInteger sample code for java.math.BigDecimal.toBigInteger() definition code for java.math.BigDecimal.toBigInteger()

public BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger  toBigInteger()
Converts this BigDecimal to a BigInteger. This conversion is analogous to a narrowing primitive conversion from double to long as defined in the Java Language Specification: any fractional part of this BigDecimal will be discarded. Note that this conversion can lose information about the precision of the BigDecimal value.

To have an exception thrown if the conversion is inexact (in other words if a nonzero fractional part is discarded), use the toBigIntegerExact() sample code for java.math.BigDecimal.toBigIntegerExact() definition code for java.math.BigDecimal.toBigIntegerExact() method.

Returns:
this BigDecimal converted to a BigInteger.

toBigIntegerExact sample code for java.math.BigDecimal.toBigIntegerExact() definition code for java.math.BigDecimal.toBigIntegerExact()

public BigInteger sample code for java.math.BigInteger definition code for java.math.BigInteger  toBigIntegerExact()
Converts this BigDecimal to a BigInteger, checking for lost information. An exception is thrown if this BigDecimal has a nonzero fractional part.

Returns:
this BigDecimal converted to a BigInteger.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if this has a nonzero fractional part.
Since:
1.5

longValue sample code for java.math.BigDecimal.longValue() definition code for java.math.BigDecimal.longValue()

public long longValue()
Converts this BigDecimal to a long. This conversion is analogous to a narrowing primitive conversion from double to short as defined in the Java Language Specification: any fractional part of this BigDecimal will be discarded, and if the resulting "BigInteger" is too big to fit in a long, only the low-order 64 bits are returned. Note that this conversion can lose information about the overall magnitude and precision of this BigDecimal value as well as return a result with the opposite sign.

Specified by:
longValue sample code for java.lang.Number.longValue() definition code for java.lang.Number.longValue() in class Number sample code for java.lang.Number definition code for java.lang.Number
Returns:
this BigDecimal converted to a long.

longValueExact sample code for java.math.BigDecimal.longValueExact() definition code for java.math.BigDecimal.longValueExact()

public long longValueExact()
Converts this BigDecimal to a long, checking for lost information. If this BigDecimal has a nonzero fractional part or is out of the possible range for a long result then an ArithmeticException is thrown.

Returns:
this BigDecimal converted to a long.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if this has a nonzero fractional part, or will not fit in a long.
Since:
1.5

intValue sample code for java.math.BigDecimal.intValue() definition code for java.math.BigDecimal.intValue()

public int intValue()
Converts this BigDecimal to an int. This conversion is analogous to a narrowing primitive conversion from double to short as defined in the Java Language Specification: any fractional part of this BigDecimal will be discarded, and if the resulting "BigInteger" is too big to fit in an int, only the low-order 32 bits are returned. Note that this conversion can lose information about the overall magnitude and precision of this BigDecimal value as well as return a result with the opposite sign.

Specified by:
intValue sample code for java.lang.Number.intValue() definition code for java.lang.Number.intValue() in class Number sample code for java.lang.Number definition code for java.lang.Number
Returns:
this BigDecimal converted to an int.

intValueExact sample code for java.math.BigDecimal.intValueExact() definition code for java.math.BigDecimal.intValueExact()

public int intValueExact()
Converts this BigDecimal to an int, checking for lost information. If this BigDecimal has a nonzero fractional part or is out of the possible range for an int result then an ArithmeticException is thrown.

Returns:
this BigDecimal converted to an int.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if this has a nonzero fractional part, or will not fit in an int.
Since:
1.5

shortValueExact sample code for java.math.BigDecimal.shortValueExact() definition code for java.math.BigDecimal.shortValueExact()

public short shortValueExact()
Converts this BigDecimal to a short, checking for lost information. If this BigDecimal has a nonzero fractional part or is out of the possible range for a short result then an ArithmeticException is thrown.

Returns:
this BigDecimal converted to a short.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if this has a nonzero fractional part, or will not fit in a short.
Since:
1.5

byteValueExact sample code for java.math.BigDecimal.byteValueExact() definition code for java.math.BigDecimal.byteValueExact()

public byte byteValueExact()
Converts this BigDecimal to a byte, checking for lost information. If this BigDecimal has a nonzero fractional part or is out of the possible range for a byte result then an ArithmeticException is thrown.

Returns:
this BigDecimal converted to a byte.
Throws:
ArithmeticException sample code for java.lang.ArithmeticException definition code for java.lang.ArithmeticException - if this has a nonzero fractional part, or will not fit in a byte.
Since:
1.5

floatValue sample code for java.math.BigDecimal.floatValue() definition code for java.math.BigDecimal.floatValue()

public float floatValue()
Converts this BigDecimal to a float. This conversion is similar to the narrowing primitive conversion from double to float defined in the Java Language Specification: if this BigDecimal has too great a magnitude to represent as a float, it will be converted to Float.NEGATIVE_INFINITY sample code for java.lang.Float.NEGATIVE_INFINITY definition code for java.lang.Float.NEGATIVE_INFINITY or Float.POSITIVE_INFINITY sample code for java.lang.Float.POSITIVE_INFINITY definition code for java.lang.Float.POSITIVE_INFINITY as appropriate. Note that even when the return value is finite, this conversion can lose information about the precision of the BigDecimal value.

Specified by:
floatValue sample code for java.lang.Number.floatValue() definition code for java.lang.Number.floatValue() in class Number sample code for java.lang.Number definition code for java.lang.Number
Returns:
this BigDecimal converted to a float.

doubleValue sample code for java.math.BigDecimal.doubleValue() definition code for java.math.BigDecimal.doubleValue()

public double doubleValue()
Converts this BigDecimal to a double. This conversion is similar to the narrowing primitive conversion from double to float as defined in the Java Language Specification: if this BigDecimal has too great a magnitude represent as a double, it will be converted to Double.NEGATIVE_INFINITY sample code for java.lang.Double.NEGATIVE_INFINITY definition code for java.lang.Double.NEGATIVE_INFINITY or Double.POSITIVE_INFINITY sample code for java.lang.Double.POSITIVE_INFINITY definition code for java.lang.Double.POSITIVE_INFINITY as appropriate. Note that even when the return value is finite, this conversion can lose information about the precision of the BigDecimal value.

Specified by:
doubleValue sample code for java.lang.Number.doubleValue() definition code for java.lang.Number.doubleValue() in class Number sample code for java.lang.Number definition code for java.lang.Number
Returns:
this BigDecimal converted to a double.

ulp sample code for java.math.BigDecimal.ulp() definition code for java.math.BigDecimal.ulp()

public BigDecimal sample code for java.math.BigDecimal definition code for java.math.BigDecimal  ulp()
Returns the size of an ulp, a unit in the last place, of this BigDecimal. An ulp of a nonzero BigDecimal value is the positive distance between this value and the BigDecimal value next larger in magnitude with the same number of digits. An ulp of a zero value is numerically equal to 1 with the scale of this. The result is stored with the same scale as this so the result for zero and nonzero values is equal to [1, this.scale()].

Returns:
the size of an ulp of this
Since:
1.5