java.util.zip
Interface Checksum
java.lang.Object
|
+--java.util.zip.Checksum
public interface Checksum
Interface to compute a data checksum used by checked input/output streams.
A data checksum can be updated by one byte or with a byte array. After each
update the value of the current checksum can be returned by calling
getValue. The complete checksum object can also be reset
so it can be used again with new data.
Authors:- Per Bothner
- Jochen Hoenicke
See Also:
getValue
public long getValue() Returns the data checksum computed so far.
reset
public void reset() Resets the data checksum as if no update was ever called.
update
public void update(byte[] buf, int off, int len) Adds the byte array to the data checksum.
Parameters:
update
public void update(int bval) Adds one byte to the data checksum.
Parameters:
getValue. The complete checksum object can also be reset so it can be used again with new data.