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java.util.zip
Interface Checksum

All Known Implementing Classes:
Adler32, CRC32
public interface Checksum

An interface representing a data checksum.

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

Method Detail

update

public void update(int b)
Updates the current checksum with the specified byte.
Parameters:
b - the byte to update the checksum with

update

public 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

public long getValue()
Returns the current checksum value.
Returns:
the current checksum value

reset

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