CRC32 (Java Platform SE 7 b138)

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

Constructors
Constructor and Description

CRC32()
Creates a new CRC32 object.

Constructors
Constructor and Description
`CRC32()` Creates a new CRC32 object.

Method Summary

Methods
Modifier and Type	Method and Description
`long`	`getValue()` Returns CRC-32 value.
`void`	`reset()` Resets CRC-32 to initial value.
`void`	`update(byte[] b)` Updates the CRC-32 checksum with the specified array of bytes.
`void`	`update(byte[] b, int off, int len)` Updates the CRC-32 checksum with the specified array of bytes.
`void`	`update(int b)` Updates the CRC-32 checksum with the specified byte (the low eight bits of the argument b).

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CRC32
```
public CRC32()
```
    Creates a new CRC32 object.
- Method Detail
  - update
```
public void update(int b)
```
    Updates the CRC-32 checksum with the specified byte (the low eight bits of the argument b).
    
    Specified by:
    
    update in interface Checksum
    
    Parameters:
    b - the byte to update the checksum with
  - update
```
public void update(byte[] b,
          int off,
          int len)
```
    Updates the CRC-32 checksum with the specified array of bytes.
    
    Specified by:
    
    update in interface Checksum
    
    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
  - update
```
public void update(byte[] b)
```
    Updates the CRC-32 checksum with the specified array of bytes.
    
    Parameters:
    b - 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
    
    Returns:
    the current checksum value

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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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DRAFT ea-b138

Class CRC32

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

CRC32

Method Detail

update

update

update

reset

getValue