java.util.zip
Interface Checksum

All Known Implementing Classes:
Adler32 sample code for java.util.zip.Adler32 definition code for java.util.zip.Adler32 , CRC32 sample code for java.util.zip.CRC32 definition code for java.util.zip.CRC32

public interface Checksum

An interface representing a data checksum.


Method Summary
 long getValue sample code for java.util.zip.Checksum.getValue() definition code for java.util.zip.Checksum.getValue() ()
          Returns the current checksum value.
 void reset sample code for java.util.zip.Checksum.reset() definition code for java.util.zip.Checksum.reset() ()
          Resets the checksum to its initial value.
 void update sample code for java.util.zip.Checksum.update(byte[], int, int) definition code for java.util.zip.Checksum.update(byte[], int, int) (byte[] b, int off, int len)
          Updates the current checksum with the specified array of bytes.
 void update sample code for java.util.zip.Checksum.update(int) definition code for java.util.zip.Checksum.update(int) (int b)
          Updates the current checksum with the specified byte.
 

Method Detail

update sample code for java.util.zip.Checksum.update(int) definition code for java.util.zip.Checksum.update(int)

void update(int b)
Updates the current checksum with the specified byte.

Parameters:
b - the byte to update the checksum with

update sample code for java.util.zip.Checksum.update(byte[], int, int) definition code for java.util.zip.Checksum.update(byte[], int, int)

void update(byte[] b,
            int off,
            int len)
Updates the current checksum with the specified array of bytes.

Parameters:
b - the byte array to update the checksum with
off - the start offset of the data
len - the number of bytes to use for the update

getValue sample code for java.util.zip.Checksum.getValue() definition code for java.util.zip.Checksum.getValue()

long getValue()
Returns the current checksum value.

Returns:
the current checksum value

reset sample code for java.util.zip.Checksum.reset() definition code for java.util.zip.Checksum.reset()

void reset()
Resets the checksum to its initial value.