java.util.zip
Class Adler32
java.lang.Object
|
+--java.util.zip.Adler32
- All Implemented Interfaces:
- Checksum
- public class Adler32
- extends Object
- implements Checksum
A class that can be used to compute the Adler-32 checksum of a data
stream. An Adler-32 checksum is almost as reliable as a CRC-32 but
can be computed much faster.
- See Also:
Checksum
Constructor Summary |
Adler32()
Creates a new Adler32 class. |
Method Summary |
long |
getValue()
Returns checksum value. |
void |
reset()
Resets checksum to initial value. |
void |
update(byte[] b)
Updates checksum with specified array of bytes. |
void |
update(byte[] b,
int off,
int len)
Updates checksum with specified array of bytes. |
void |
update(int b)
Updates checksum with specified byte. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Adler32
public Adler32()
- Creates a new Adler32 class.
update
public void update(int b)
- Updates checksum with specified byte.
- Specified by:
update
in interface Checksum
- Parameters:
b
- an array of bytes
update
public void update(byte[] b,
int off,
int len)
- Updates checksum with specified array of bytes.
- Specified by:
update
in interface Checksum
- Following copied from interface:
java.util.zip.Checksum
- Parameters:
b
- the byte array to update the checksum withoff
- the start offset of the datalen
- the number of bytes to use for the update
update
public void update(byte[] b)
- Updates checksum with specified array of bytes.
reset
public void reset()
- Resets checksum to initial value.
- Specified by:
reset
in interface Checksum
getValue
public long getValue()
- Returns checksum value.
- Specified by:
getValue
in interface Checksum
- Following copied from interface:
java.util.zip.Checksum
- Returns:
- the current checksum value
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