java.util.zip
Class CRC32
java.lang.Object
|
+--java.util.zip.CRC32
- All Implemented Interfaces:
- Checksum
- public class CRC32
- extends Object
- implements Checksum
A class that can be used to compute the CRC-32 of a data stream.
- See Also:
Checksum
Constructor Summary |
CRC32()
Creates a new CRC32 class. |
Method Summary |
long |
getValue()
Returns CRC-32 value. |
void |
reset()
Resets CRC-32 to initial value. |
void |
update(byte[] b)
Updates checksum with specified array of bytes. |
void |
update(byte[] b,
int off,
int len)
Updates CRC-32 with specified array of bytes. |
void |
update(int b)
Updates CRC-32 with specified byte. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
CRC32
public CRC32()
- Creates a new CRC32 class.
update
public void update(int b)
- Updates CRC-32 with specified byte.
- Specified by:
update
in interface Checksum
- Following copied from interface:
java.util.zip.Checksum
- Parameters:
b
- the byte to update the checksum with
update
public void update(byte[] b,
int off,
int len)
- Updates CRC-32 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.
- Parameters:
the
- array of bytes to update the checksum with
reset
public void reset()
- Resets CRC-32 to initial value.
- Specified by:
reset
in interface Checksum
getValue
public long getValue()
- Returns CRC-32 value.
- Specified by:
getValue
in interface Checksum
- Following copied from interface:
java.util.zip.Checksum
- Returns:
- the current checksum value
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