java.lang
Class Long

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.lang.Long
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 <Long sample code for java.lang.Long definition code for java.lang.Long >

public final class Long
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 <Long sample code for java.lang.Long definition code for java.lang.Long >

The Long class wraps a value of the primitive type long in an object. An object of type Long contains a single field whose type is long.

In addition, this class provides several methods for converting a long to a String and a String to a long, as well as other constants and methods useful when dealing with a long.

Implementation note: The implementations of the "bit twiddling" methods (such as highestOneBit sample code for java.lang.Long.highestOneBit(long) definition code for java.lang.Long.highestOneBit(long) and numberOfTrailingZeros sample code for java.lang.Long.numberOfTrailingZeros(long) definition code for java.lang.Long.numberOfTrailingZeros(long) ) are based on material from Henry S. Warren, Jr.'s Hacker's Delight, (Addison Wesley, 2002).

Since:
JDK1.0
See Also:
Serialized Form

Field Summary
static long MAX_VALUE sample code for java.lang.Long.MAX_VALUE definition code for java.lang.Long.MAX_VALUE
          A constant holding the maximum value a long can have, 263-1.
static long MIN_VALUE sample code for java.lang.Long.MIN_VALUE definition code for java.lang.Long.MIN_VALUE
          A constant holding the minimum value a long can have, -263.
static int SIZE sample code for java.lang.Long.SIZE definition code for java.lang.Long.SIZE
          The number of bits used to represent a long value in two's complement binary form.
static Class sample code for java.lang.Class definition code for java.lang.Class <Long sample code for java.lang.Long definition code for java.lang.Long > TYPE sample code for java.lang.Long.TYPE definition code for java.lang.Long.TYPE
          The Class instance representing the primitive type long.
 
Constructor Summary
Long sample code for java.lang.Long.Long(long) definition code for java.lang.Long.Long(long) (long value)
          Constructs a newly allocated Long object that represents the specified long argument.
Long sample code for java.lang.Long.Long(java.lang.String) definition code for java.lang.Long.Long(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  s)
          Constructs a newly allocated Long object that represents the long value indicated by the String parameter.
 
Method Summary
static int bitCount sample code for java.lang.Long.bitCount(long) definition code for java.lang.Long.bitCount(long) (long i)
          Returns the number of one-bits in the two's complement binary representation of the specified long value.
 byte byteValue sample code for java.lang.Long.byteValue() definition code for java.lang.Long.byteValue() ()
          Returns the value of this Long as a byte.
 int compareTo sample code for java.lang.Long.compareTo(java.lang.Long) definition code for java.lang.Long.compareTo(java.lang.Long) (Long sample code for java.lang.Long definition code for java.lang.Long  anotherLong)
          Compares two Long objects numerically.
static Long sample code for java.lang.Long definition code for java.lang.Long decode sample code for java.lang.Long.decode(java.lang.String) definition code for java.lang.Long.decode(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  nm)
          Decodes a String into a Long.
 double doubleValue sample code for java.lang.Long.doubleValue() definition code for java.lang.Long.doubleValue() ()
          Returns the value of this Long as a double.
 boolean equals sample code for java.lang.Long.equals(java.lang.Object) definition code for java.lang.Long.equals(java.lang.Object) (Object sample code for java.lang.Object definition code for java.lang.Object  obj)
          Compares this object to the specified object.
 float floatValue sample code for java.lang.Long.floatValue() definition code for java.lang.Long.floatValue() ()
          Returns the value of this Long as a float.
static Long sample code for java.lang.Long definition code for java.lang.Long getLong sample code for java.lang.Long.getLong(java.lang.String) definition code for java.lang.Long.getLong(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  nm)
          Determines the long value of the system property with the specified name.
static Long sample code for java.lang.Long definition code for java.lang.Long getLong sample code for java.lang.Long.getLong(java.lang.String, long) definition code for java.lang.Long.getLong(java.lang.String, long) (String sample code for java.lang.String definition code for java.lang.String  nm, long val)
          Determines the long value of the system property with the specified name.
static Long sample code for java.lang.Long definition code for java.lang.Long getLong sample code for java.lang.Long.getLong(java.lang.String, java.lang.Long) definition code for java.lang.Long.getLong(java.lang.String, java.lang.Long) (String sample code for java.lang.String definition code for java.lang.String  nm, Long sample code for java.lang.Long definition code for java.lang.Long  val)
          Returns the long value of the system property with the specified name.
 int hashCode sample code for java.lang.Long.hashCode() definition code for java.lang.Long.hashCode() ()
          Returns a hash code for this Long.
static long highestOneBit sample code for java.lang.Long.highestOneBit(long) definition code for java.lang.Long.highestOneBit(long) (long i)
          Returns an long value with at most a single one-bit, in the position of the highest-order ("leftmost") one-bit in the specified long value.
 int intValue sample code for java.lang.Long.intValue() definition code for java.lang.Long.intValue() ()
          Returns the value of this Long as an int.
 long longValue sample code for java.lang.Long.longValue() definition code for java.lang.Long.longValue() ()
          Returns the value of this Long as a long value.
static long lowestOneBit sample code for java.lang.Long.lowestOneBit(long) definition code for java.lang.Long.lowestOneBit(long) (long i)
          Returns an long value with at most a single one-bit, in the position of the lowest-order ("rightmost") one-bit in the specified long value.
static int numberOfLeadingZeros sample code for java.lang.Long.numberOfLeadingZeros(long) definition code for java.lang.Long.numberOfLeadingZeros(long) (long i)
          Returns the number of zero bits preceding the highest-order ("leftmost") one-bit in the two's complement binary representation of the specified long value.
static int numberOfTrailingZeros sample code for java.lang.Long.numberOfTrailingZeros(long) definition code for java.lang.Long.numberOfTrailingZeros(long) (long i)
          Returns the number of zero bits following the lowest-order ("rightmost") one-bit in the two's complement binary representation of the specified long value.
static long parseLong sample code for java.lang.Long.parseLong(java.lang.String) definition code for java.lang.Long.parseLong(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  s)
          Parses the string argument as a signed decimal long.
static long parseLong sample code for java.lang.Long.parseLong(java.lang.String, int) definition code for java.lang.Long.parseLong(java.lang.String, int) (String sample code for java.lang.String definition code for java.lang.String  s, int radix)
          Parses the string argument as a signed long in the radix specified by the second argument.
static long reverse sample code for java.lang.Long.reverse(long) definition code for java.lang.Long.reverse(long) (long i)
          Returns the value obtained by reversing the order of the bits in the two's complement binary representation of the specified long value.
static long reverseBytes sample code for java.lang.Long.reverseBytes(long) definition code for java.lang.Long.reverseBytes(long) (long i)
          Returns the value obtained by reversing the order of the bytes in the two's complement representation of the specified long value.
static long rotateLeft sample code for java.lang.Long.rotateLeft(long, int) definition code for java.lang.Long.rotateLeft(long, int) (long i, int distance)
          Returns the value obtained by rotating the two's complement binary representation of the specified long value left by the specified number of bits.
static long rotateRight sample code for java.lang.Long.rotateRight(long, int) definition code for java.lang.Long.rotateRight(long, int) (long i, int distance)
          Returns the value obtained by rotating the two's complement binary representation of the specified long value right by the specified number of bits.
 short shortValue sample code for java.lang.Long.shortValue() definition code for java.lang.Long.shortValue() ()
          Returns the value of this Long as a short.
static int signum sample code for java.lang.Long.signum(long) definition code for java.lang.Long.signum(long) (long i)
          Returns the signum function of the specified long value.
static String sample code for java.lang.String definition code for java.lang.String toBinaryString sample code for java.lang.Long.toBinaryString(long) definition code for java.lang.Long.toBinaryString(long) (long i)
          Returns a string representation of the long argument as an unsigned integer in base 2.
static String sample code for java.lang.String definition code for java.lang.String toHexString sample code for java.lang.Long.toHexString(long) definition code for java.lang.Long.toHexString(long) (long i)
          Returns a string representation of the long argument as an unsigned integer in base 16.
static String sample code for java.lang.String definition code for java.lang.String toOctalString sample code for java.lang.Long.toOctalString(long) definition code for java.lang.Long.toOctalString(long) (long i)
          Returns a string representation of the long argument as an unsigned integer in base 8.
 String sample code for java.lang.String definition code for java.lang.String toString sample code for java.lang.Long.toString() definition code for java.lang.Long.toString() ()
          Returns a String object representing this Long's value.
static String sample code for java.lang.String definition code for java.lang.String toString sample code for java.lang.Long.toString(long) definition code for java.lang.Long.toString(long) (long i)
          Returns a String object representing the specified long.
static String sample code for java.lang.String definition code for java.lang.String toString sample code for java.lang.Long.toString(long, int) definition code for java.lang.Long.toString(long, int) (long i, int radix)
          Returns a string representation of the first argument in the radix specified by the second argument.
static Long sample code for java.lang.Long definition code for java.lang.Long valueOf sample code for java.lang.Long.valueOf(long) definition code for java.lang.Long.valueOf(long) (long l)
          Returns a Long instance representing the specified long value.
static Long sample code for java.lang.Long definition code for java.lang.Long valueOf sample code for java.lang.Long.valueOf(java.lang.String) definition code for java.lang.Long.valueOf(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  s)
          Returns a Long object holding the value of the specified String.
static Long sample code for java.lang.Long definition code for java.lang.Long valueOf sample code for java.lang.Long.valueOf(java.lang.String, int) definition code for java.lang.Long.valueOf(java.lang.String, int) (String sample code for java.lang.String definition code for java.lang.String  s, int radix)
          Returns a Long object holding the value extracted from the specified String when parsed with the radix given by the second argument.
 
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

MIN_VALUE sample code for java.lang.Long.MIN_VALUE

public static final long MIN_VALUE
A constant holding the minimum value a long can have, -263.

See Also:
Constant Field Values

MAX_VALUE sample code for java.lang.Long.MAX_VALUE

public static final long MAX_VALUE
A constant holding the maximum value a long can have, 263-1.

See Also:
Constant Field Values

TYPE sample code for java.lang.Long.TYPE

public static final Class sample code for java.lang.Class definition code for java.lang.Class <Long sample code for java.lang.Long definition code for java.lang.Long > TYPE
The Class instance representing the primitive type long.

Since:
JDK1.1

SIZE sample code for java.lang.Long.SIZE

public static final int SIZE
The number of bits used to represent a long value in two's complement binary form.

Since:
1.5
See Also:
Constant Field Values
Constructor Detail

Long sample code for java.lang.Long(long) definition code for java.lang.Long(long)

public Long(long value)
Constructs a newly allocated Long object that represents the specified long argument.

Parameters:
value - the value to be represented by the Long object.

Long sample code for java.lang.Long(java.lang.String) definition code for java.lang.Long(java.lang.String)

public Long(String sample code for java.lang.String definition code for java.lang.String  s)
     throws NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException 
Constructs a newly allocated Long object that represents the long value indicated by the String parameter. The string is converted to a long value in exactly the manner used by the parseLong method for radix 10.

Parameters:
s - the String to be converted to a Long.
Throws:
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if the String does not contain a parsable long.
See Also:
parseLong(java.lang.String, int) sample code for java.lang.Long.parseLong(java.lang.String, int) definition code for java.lang.Long.parseLong(java.lang.String, int)
Method Detail

toString sample code for java.lang.Long.toString(long, int) definition code for java.lang.Long.toString(long, int)

public static String sample code for java.lang.String definition code for java.lang.String  toString(long i,
                              int radix)
Returns a string representation of the first argument in the radix specified by the second argument.

If the radix is smaller than Character.MIN_RADIX or larger than Character.MAX_RADIX, then the radix 10 is used instead.

If the first argument is negative, the first element of the result is the ASCII minus sign '-' ('\u002d'). If the first argument is not negative, no sign character appears in the result.

The remaining characters of the result represent the magnitude of the first argument. If the magnitude is zero, it is represented by a single zero character '0' ('\u0030'); otherwise, the first character of the representation of the magnitude will not be the zero character. The following ASCII characters are used as digits:

   0123456789abcdefghijklmnopqrstuvwxyz
 
These are '\u0030' through '\u0039' and '\u0061' through '\u007a'. If radix is N, then the first N of these characters are used as radix-N digits in the order shown. Thus, the digits for hexadecimal (radix 16) are 0123456789abcdef. If uppercase letters are desired, the String.toUpperCase() sample code for java.lang.String.toUpperCase() definition code for java.lang.String.toUpperCase() method may be called on the result:
 Long.toString(n, 16).toUpperCase()
 

Parameters:
i - a longto be converted to a string.
radix - the radix to use in the string representation.
Returns:
a string representation of the argument in the specified radix.
See Also:
Character.MAX_RADIX sample code for java.lang.Character.MAX_RADIX definition code for java.lang.Character.MAX_RADIX , Character.MIN_RADIX sample code for java.lang.Character.MIN_RADIX definition code for java.lang.Character.MIN_RADIX

toHexString sample code for java.lang.Long.toHexString(long) definition code for java.lang.Long.toHexString(long)

public static String sample code for java.lang.String definition code for java.lang.String  toHexString(long i)
Returns a string representation of the long argument as an unsigned integer in base 16.

The unsigned long value is the argument plus 264 if the argument is negative; otherwise, it is equal to the argument. This value is converted to a string of ASCII digits in hexadecimal (base 16) with no extra leading 0s. If the unsigned magnitude is zero, it is represented by a single zero character '0' ('\u0030'); otherwise, the first character of the representation of the unsigned magnitude will not be the zero character. The following characters are used as hexadecimal digits:

 0123456789abcdef
 
These are the characters '\u0030' through '\u0039' and '\u0061' through '\u0066'. If uppercase letters are desired, the String.toUpperCase() sample code for java.lang.String.toUpperCase() definition code for java.lang.String.toUpperCase() method may be called on the result:
 Long.toHexString(n).toUpperCase()
 

Parameters:
i - a long to be converted to a string.
Returns:
the string representation of the unsigned long value represented by the argument in hexadecimal (base 16).
Since:
JDK 1.0.2

toOctalString sample code for java.lang.Long.toOctalString(long) definition code for java.lang.Long.toOctalString(long)

public static String sample code for java.lang.String definition code for java.lang.String  toOctalString(long i)
Returns a string representation of the long argument as an unsigned integer in base 8.

The unsigned long value is the argument plus 264 if the argument is negative; otherwise, it is equal to the argument. This value is converted to a string of ASCII digits in octal (base 8) with no extra leading 0s.

If the unsigned magnitude is zero, it is represented by a single zero character '0' ('\u0030'); otherwise, the first character of the representation of the unsigned magnitude will not be the zero character. The following characters are used as octal digits:

 01234567
 
These are the characters '\u0030' through '\u0037'.

Parameters:
i - a long to be converted to a string.
Returns:
the string representation of the unsigned long value represented by the argument in octal (base 8).
Since:
JDK 1.0.2

toBinaryString sample code for java.lang.Long.toBinaryString(long) definition code for java.lang.Long.toBinaryString(long)

public static String sample code for java.lang.String definition code for java.lang.String  toBinaryString(long i)
Returns a string representation of the long argument as an unsigned integer in base 2.

The unsigned long value is the argument plus 264 if the argument is negative; otherwise, it is equal to the argument. This value is converted to a string of ASCII digits in binary (base 2) with no extra leading 0s. If the unsigned magnitude is zero, it is represented by a single zero character '0' ('\u0030'); otherwise, the first character of the representation of the unsigned magnitude will not be the zero character. The characters '0' ('\u0030') and '1' ('\u0031') are used as binary digits.

Parameters:
i - a long to be converted to a string.
Returns:
the string representation of the unsigned long value represented by the argument in binary (base 2).
Since:
JDK 1.0.2

toString sample code for java.lang.Long.toString(long) definition code for java.lang.Long.toString(long)

public static String sample code for java.lang.String definition code for java.lang.String  toString(long i)
Returns a String object representing the specified long. The argument is converted to signed decimal representation and returned as a string, exactly as if the argument and the radix 10 were given as arguments to the toString(long, int) sample code for java.lang.Long.toString(long, int) definition code for java.lang.Long.toString(long, int) method.

Parameters:
i - a long to be converted.
Returns:
a string representation of the argument in base 10.

parseLong sample code for java.lang.Long.parseLong(java.lang.String, int) definition code for java.lang.Long.parseLong(java.lang.String, int)

public static long parseLong(String sample code for java.lang.String definition code for java.lang.String  s,
                             int radix)
                      throws NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException 
Parses the string argument as a signed long in the radix specified by the second argument. The characters in the string must all be digits of the specified radix (as determined by whether Character.digit(char, int) sample code for java.lang.Character.digit(char, int) definition code for java.lang.Character.digit(char, int) returns a nonnegative value), except that the first character may be an ASCII minus sign '-' ('\u002D') to indicate a negative value. The resulting long value is returned.

Note that neither the character L ('\u004C') nor l ('\u006C') is permitted to appear at the end of the string as a type indicator, as would be permitted in Java programming language source code - except that either L or l may appear as a digit for a radix greater than 22.

An exception of type NumberFormatException is thrown if any of the following situations occurs:

Examples:

 parseLong("0", 10) returns 0L
 parseLong("473", 10) returns 473L
 parseLong("-0", 10) returns 0L
 parseLong("-FF", 16) returns -255L
 parseLong("1100110", 2) returns 102L
 parseLong("99", 8) throws a NumberFormatException
 parseLong("Hazelnut", 10) throws a NumberFormatException
 parseLong("Hazelnut", 36) returns 1356099454469L
 

Parameters:
s - the String containing the long representation to be parsed.
radix - the radix to be used while parsing s.
Returns:
the long represented by the string argument in the specified radix.
Throws:
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if the string does not contain a parsable long.

parseLong sample code for java.lang.Long.parseLong(java.lang.String) definition code for java.lang.Long.parseLong(java.lang.String)

public static long parseLong(String sample code for java.lang.String definition code for java.lang.String  s)
                      throws NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException 
Parses the string argument as a signed decimal long. The characters in the string must all be decimal digits, except that the first character may be an ASCII minus sign '-' (\u002D') to indicate a negative value. The resulting long value is returned, exactly as if the argument and the radix 10 were given as arguments to the parseLong(java.lang.String, int) sample code for java.lang.Long.parseLong(java.lang.String, int) definition code for java.lang.Long.parseLong(java.lang.String, int) method.

Note that neither the character L ('\u004C') nor l ('\u006C') is permitted to appear at the end of the string as a type indicator, as would be permitted in Java programming language source code.

Parameters:
s - a String containing the long representation to be parsed
Returns:
the long represented by the argument in decimal.
Throws:
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if the string does not contain a parsable long.

valueOf sample code for java.lang.Long.valueOf(java.lang.String, int) definition code for java.lang.Long.valueOf(java.lang.String, int)

public static Long sample code for java.lang.Long definition code for java.lang.Long  valueOf(String sample code for java.lang.String definition code for java.lang.String  s,
                           int radix)
                    throws NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException 
Returns a Long object holding the value extracted from the specified String when parsed with the radix given by the second argument. The first argument is interpreted as representing a signed long in the radix specified by the second argument, exactly as if the arguments were given to the parseLong(java.lang.String, int) sample code for java.lang.Long.parseLong(java.lang.String, int) definition code for java.lang.Long.parseLong(java.lang.String, int) method. The result is a Long object that represents the long value specified by the string.

In other words, this method returns a Long object equal to the value of:

new Long(Long.parseLong(s, radix))

Parameters:
s - the string to be parsed
radix - the radix to be used in interpreting s
Returns:
a Long object holding the value represented by the string argument in the specified radix.
Throws:
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - If the String does not contain a parsable long.

valueOf sample code for java.lang.Long.valueOf(java.lang.String) definition code for java.lang.Long.valueOf(java.lang.String)

public static Long sample code for java.lang.Long definition code for java.lang.Long  valueOf(String sample code for java.lang.String definition code for java.lang.String  s)
                    throws NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException 
Returns a Long object holding the value of the specified String. The argument is interpreted as representing a signed decimal long, exactly as if the argument were given to the parseLong(java.lang.String) sample code for java.lang.Long.parseLong(java.lang.String) definition code for java.lang.Long.parseLong(java.lang.String) method. The result is a Long object that represents the integer value specified by the string.

In other words, this method returns a Long object equal to the value of:

 new Long(Long.parseLong(s))
 

Parameters:
s - the string to be parsed.
Returns:
a Long object holding the value represented by the string argument.
Throws:
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - If the string cannot be parsed as a long.

valueOf sample code for java.lang.Long.valueOf(long) definition code for java.lang.Long.valueOf(long)

public static Long sample code for java.lang.Long definition code for java.lang.Long  valueOf(long l)
Returns a Long instance representing the specified long value. If a new Long instance is not required, this method should generally be used in preference to the constructor Long(long) sample code for java.lang.Long.Long(long) definition code for java.lang.Long.Long(long) , as this method is likely to yield significantly better space and time performance by caching frequently requested values.

Parameters:
l - a long value.
Returns:
a Long instance representing l.
Since:
1.5

decode sample code for java.lang.Long.decode(java.lang.String) definition code for java.lang.Long.decode(java.lang.String)

public static Long sample code for java.lang.Long definition code for java.lang.Long  decode(String sample code for java.lang.String definition code for java.lang.String  nm)
                   throws NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException 
Decodes a String into a Long. Accepts decimal, hexadecimal, and octal numbers given by the following grammar:
DecodableString:
Signopt DecimalNumeral
Signopt 0x HexDigits
Signopt 0X HexDigits
Signopt # HexDigits
Signopt 0 OctalDigits

Sign:
-
DecimalNumeral, HexDigits, and OctalDigits are defined in §3.10.1 of the Java Language Specification.

The sequence of characters following an (optional) negative sign and/or radix specifier ("0x", "0X", "#", or leading zero) is parsed as by the Long.parseLong method with the indicated radix (10, 16, or 8). This sequence of characters must represent a positive value or a NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException will be thrown. The result is negated if first character of the specified String is the minus sign. No whitespace characters are permitted in the String.

Parameters:
nm - the String to decode.
Returns:
a Long object holding the long value represented by nm
Throws:
NumberFormatException sample code for java.lang.NumberFormatException definition code for java.lang.NumberFormatException - if the String does not contain a parsable long.
Since:
1.2
See Also:
parseLong(String, int) sample code for java.lang.Long.parseLong(java.lang.String, int) definition code for java.lang.Long.parseLong(java.lang.String, int)

byteValue sample code for java.lang.Long.byteValue() definition code for java.lang.Long.byteValue()

public byte byteValue()
Returns the value of this Long as a byte.

Overrides:
byteValue sample code for java.lang.Number.byteValue() definition code for java.lang.Number.byteValue() in class Number sample code for java.lang.Number definition code for java.lang.Number
Returns:
the numeric value represented by this object after conversion to type byte.

shortValue sample code for java.lang.Long.shortValue() definition code for java.lang.Long.shortValue()

public short shortValue()
Returns the value of this Long as a short.

Overrides:
shortValue sample code for java.lang.Number.shortValue() definition code for java.lang.Number.shortValue() in class Number sample code for java.lang.Number definition code for java.lang.Number
Returns:
the numeric value represented by this object after conversion to type short.

intValue sample code for java.lang.Long.intValue() definition code for java.lang.Long.intValue()

public int intValue()
Returns the value of this Long as an int.

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:
the numeric value represented by this object after conversion to type int.

longValue sample code for java.lang.Long.longValue() definition code for java.lang.Long.longValue()

public long longValue()
Returns the value of this Long as a long value.

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:
the numeric value represented by this object after conversion to type long.

floatValue sample code for java.lang.Long.floatValue() definition code for java.lang.Long.floatValue()

public float floatValue()
Returns the value of this Long as a float.

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:
the numeric value represented by this object after conversion to type float.

doubleValue sample code for java.lang.Long.doubleValue() definition code for java.lang.Long.doubleValue()

public double doubleValue()
Returns the value of this Long as a double.

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:
the numeric value represented by this object after conversion to type double.

toString sample code for java.lang.Long.toString() definition code for java.lang.Long.toString()

public String sample code for java.lang.String definition code for java.lang.String  toString()
Returns a String object representing this Long's value. The value is converted to signed decimal representation and returned as a string, exactly as if the long value were given as an argument to the toString(long) sample code for java.lang.Long.toString(long) definition code for java.lang.Long.toString(long) method.

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:
a string representation of the value of this object in base 10.

hashCode sample code for java.lang.Long.hashCode() definition code for java.lang.Long.hashCode()

public int hashCode()
Returns a hash code for this Long. The result is the exclusive OR of the two halves of the primitive long value held by this Long object. That is, the hashcode is the value of the expression:
 (int)(this.longValue()^(this.longValue()>>>32))
 

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:
a hash code value for this object.
See Also:
Object.equals(java.lang.Object) sample code for java.lang.Object.equals(java.lang.Object) definition code for java.lang.Object.equals(java.lang.Object) , Hashtable sample code for java.util.Hashtable definition code for java.util.Hashtable

equals sample code for java.lang.Long.equals(java.lang.Object) definition code for java.lang.Long.equals(java.lang.Object)

public boolean equals(Object sample code for java.lang.Object definition code for java.lang.Object  obj)
Compares this object to the specified object. The result is true if and only if the argument is not null and is a Long object that contains the same long value as this object.

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:
obj - the object to compare with.
Returns:
true if the objects are the same; false otherwise.
See Also:
Object.hashCode() sample code for java.lang.Object.hashCode() definition code for java.lang.Object.hashCode() , Hashtable sample code for java.util.Hashtable definition code for java.util.Hashtable

getLong sample code for java.lang.Long.getLong(java.lang.String) definition code for java.lang.Long.getLong(java.lang.String)

public static Long sample code for java.lang.Long definition code for java.lang.Long  getLong(String sample code for java.lang.String definition code for java.lang.String  nm)
Determines the long value of the system property with the specified name.

The first argument is treated as the name of a system property. System properties are accessible through the System.getProperty(java.lang.String) sample code for java.lang.System.getProperty(java.lang.String) definition code for java.lang.System.getProperty(java.lang.String) method. The string value of this property is then interpreted as a long value and a Long object representing this value is returned. Details of possible numeric formats can be found with the definition of getProperty.

If there is no property with the specified name, if the specified name is empty or null, or if the property does not have the correct numeric format, then null is returned.

In other words, this method returns a Long object equal to the value of:

getLong(nm, null)

Parameters:
nm - property name.
Returns:
the Long value of the property.
See Also:
System.getProperty(java.lang.String) sample code for java.lang.System.getProperty(java.lang.String) definition code for java.lang.System.getProperty(java.lang.String) , System.getProperty(java.lang.String, java.lang.String) sample code for java.lang.System.getProperty(java.lang.String, java.lang.String) definition code for java.lang.System.getProperty(java.lang.String, java.lang.String)

getLong sample code for java.lang.Long.getLong(java.lang.String, long) definition code for java.lang.Long.getLong(java.lang.String, long)

public static Long sample code for java.lang.Long definition code for java.lang.Long  getLong(String sample code for java.lang.String definition code for java.lang.String  nm,
                           long val)
Determines the long value of the system property with the specified name.

The first argument is treated as the name of a system property. System properties are accessible through the System.getProperty(java.lang.String) sample code for java.lang.System.getProperty(java.lang.String) definition code for java.lang.System.getProperty(java.lang.String) method. The string value of this property is then interpreted as a long value and a Long object representing this value is returned. Details of possible numeric formats can be found with the definition of getProperty.

The second argument is the default value. A Long object that represents the value of the second argument is returned if there is no property of the specified name, if the property does not have the correct numeric format, or if the specified name is empty or null.

In other words, this method returns a Long object equal to the value of:

getLong(nm, new Long(val))
but in practice it may be implemented in a manner such as:
 Long result = getLong(nm, null);
 return (result == null) ? new Long(val) : result;
 
to avoid the unnecessary allocation of a Long object when the default value is not needed.

Parameters:
nm - property name.
val - default value.
Returns:
the Long value of the property.
See Also:
System.getProperty(java.lang.String) sample code for java.lang.System.getProperty(java.lang.String) definition code for java.lang.System.getProperty(java.lang.String) , System.getProperty(java.lang.String, java.lang.String) sample code for java.lang.System.getProperty(java.lang.String, java.lang.String) definition code for java.lang.System.getProperty(java.lang.String, java.lang.String)

getLong sample code for java.lang.Long.getLong(java.lang.String, java.lang.Long) definition code for java.lang.Long.getLong(java.lang.String, java.lang.Long)

public static Long sample code for java.lang.Long definition code for java.lang.Long  getLong(String sample code for java.lang.String definition code for java.lang.String  nm,
                           Long sample code for java.lang.Long definition code for java.lang.Long  val)
Returns the long value of the system property with the specified name. The first argument is treated as the name of a system property. System properties are accessible through the System.getProperty(java.lang.String) sample code for java.lang.System.getProperty(java.lang.String) definition code for java.lang.System.getProperty(java.lang.String) method. The string value of this property is then interpreted as a long value, as per the Long.decode method, and a Long object representing this value is returned.

Note that, in every case, neither L ('\u004C') nor l ('\u006C') is permitted to appear at the end of the property value as a type indicator, as would be permitted in Java programming language source code.

The second argument is the default value. The default value is returned if there is no property of the specified name, if the property does not have the correct numeric format, or if the specified name is empty or null.

Parameters:
nm - property name.
val - default value.
Returns:
the Long value of the property.
See Also:
System.getProperty(java.lang.String) sample code for java.lang.System.getProperty(java.lang.String) definition code for java.lang.System.getProperty(java.lang.String) , System.getProperty(java.lang.String, java.lang.String) sample code for java.lang.System.getProperty(java.lang.String, java.lang.String) definition code for java.lang.System.getProperty(java.lang.String, java.lang.String) , decode(java.lang.String) sample code for java.lang.Long.decode(java.lang.String) definition code for java.lang.Long.decode(java.lang.String)

compareTo sample code for java.lang.Long.compareTo(java.lang.Long) definition code for java.lang.Long.compareTo(java.lang.Long)

public int compareTo(Long sample code for java.lang.Long definition code for java.lang.Long  anotherLong)
Compares two Long objects numerically.

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 <Long sample code for java.lang.Long definition code for java.lang.Long >
Parameters:
anotherLong - the Long to be compared.
Returns:
the value 0 if this Long is equal to the argument Long; a value less than 0 if this Long is numerically less than the argument Long; and a value greater than 0 if this Long is numerically greater than the argument Long (signed comparison).
Since:
1.2

highestOneBit sample code for java.lang.Long.highestOneBit(long) definition code for java.lang.Long.highestOneBit(long)

public static long highestOneBit(long i)
Returns an long value with at most a single one-bit, in the position of the highest-order ("leftmost") one-bit in the specified long value. Returns zero if the specified value has no one-bits in its two's complement binary representation, that is, if it is equal to zero.

Returns:
an long value with a single one-bit, in the position of the highest-order one-bit in the specified value, or zero if the specified value is itself equal to zero.
Since:
1.5

lowestOneBit sample code for java.lang.Long.lowestOneBit(long) definition code for java.lang.Long.lowestOneBit(long)

public static long lowestOneBit(long i)
Returns an long value with at most a single one-bit, in the position of the lowest-order ("rightmost") one-bit in the specified long value. Returns zero if the specified value has no one-bits in its two's complement binary representation, that is, if it is equal to zero.

Returns:
an long value with a single one-bit, in the position of the lowest-order one-bit in the specified value, or zero if the specified value is itself equal to zero.
Since:
1.5

numberOfLeadingZeros sample code for java.lang.Long.numberOfLeadingZeros(long) definition code for java.lang.Long.numberOfLeadingZeros(long)

public static int numberOfLeadingZeros(long i)
Returns the number of zero bits preceding the highest-order ("leftmost") one-bit in the two's complement binary representation of the specified long value. Returns 64 if the specified value has no one-bits in its two's complement representation, in other words if it is equal to zero.

Note that this method is closely related to the logarithm base 2. For all positive long values x:

Returns:
the number of zero bits preceding the highest-order ("leftmost") one-bit in the two's complement binary representation of the specified long value, or 64 if the value is equal to zero.
Since:
1.5

numberOfTrailingZeros sample code for java.lang.Long.numberOfTrailingZeros(long) definition code for java.lang.Long.numberOfTrailingZeros(long)

public static int numberOfTrailingZeros(long i)
Returns the number of zero bits following the lowest-order ("rightmost") one-bit in the two's complement binary representation of the specified long value. Returns 64 if the specified value has no one-bits in its two's complement representation, in other words if it is equal to zero.

Returns:
the number of zero bits following the lowest-order ("rightmost") one-bit in the two's complement binary representation of the specified long value, or 64 if the value is equal to zero.
Since:
1.5

bitCount sample code for java.lang.Long.bitCount(long) definition code for java.lang.Long.bitCount(long)

public static int bitCount(long i)
Returns the number of one-bits in the two's complement binary representation of the specified long value. This function is sometimes referred to as the population count.

Returns:
the number of one-bits in the two's complement binary representation of the specified long value.
Since:
1.5

rotateLeft sample code for java.lang.Long.rotateLeft(long, int) definition code for java.lang.Long.rotateLeft(long, int)

public static long rotateLeft(long i,
                              int distance)
Returns the value obtained by rotating the two's complement binary representation of the specified long value left by the specified number of bits. (Bits shifted out of the left hand, or high-order, side reenter on the right, or low-order.)

Note that left rotation with a negative distance is equivalent to right rotation: rotateLeft(val, -distance) == rotateRight(val, distance). Note also that rotation by any multiple of 64 is a no-op, so all but the last six bits of the rotation distance can be ignored, even if the distance is negative: rotateLeft(val, distance) == rotateLeft(val, distance & 0x3F).

Returns:
the value obtained by rotating the two's complement binary representation of the specified long value left by the specified number of bits.
Since:
1.5

rotateRight sample code for java.lang.Long.rotateRight(long, int) definition code for java.lang.Long.rotateRight(long, int)

public static long rotateRight(long i,
                               int distance)
Returns the value obtained by rotating the two's complement binary representation of the specified long value right by the specified number of bits. (Bits shifted out of the right hand, or low-order, side reenter on the left, or high-order.)

Note that right rotation with a negative distance is equivalent to left rotation: rotateRight(val, -distance) == rotateLeft(val, distance). Note also that rotation by any multiple of 64 is a no-op, so all but the last six bits of the rotation distance can be ignored, even if the distance is negative: rotateRight(val, distance) == rotateRight(val, distance & 0x3F).

Returns:
the value obtained by rotating the two's complement binary representation of the specified long value right by the specified number of bits.
Since:
1.5

reverse sample code for java.lang.Long.reverse(long) definition code for java.lang.Long.reverse(long)

public static long reverse(long i)
Returns the value obtained by reversing the order of the bits in the two's complement binary representation of the specified long value.

Returns:
the value obtained by reversing order of the bits in the specified long value.
Since:
1.5

signum sample code for java.lang.Long.signum(long) definition code for java.lang.Long.signum(long)

public static int signum(long i)
Returns the signum function of the specified long value. (The return value is -1 if the specified value is negative; 0 if the specified value is zero; and 1 if the specified value is positive.)

Returns:
the signum function of the specified long value.
Since:
1.5

reverseBytes sample code for java.lang.Long.reverseBytes(long) definition code for java.lang.Long.reverseBytes(long)

public static long reverseBytes(long i)
Returns the value obtained by reversing the order of the bytes in the two's complement representation of the specified long value.

Returns:
the value obtained by reversing the bytes in the specified long value.
Since:
1.5