Package Summary Overview Summary

class:Adler32 [NONE]

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.
Passing a null argument to a method in this class will cause a NullPointerException to be thrown.

Since:

1.1

constructor:<init>() [NONE]

Adler32
```
public Adler32()
```
Creates a new Adler32 object.

method:update(int) [NONE]

update
```
public void update(int b)
```
Updates the 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

method:update(byte[],int,int) [NONE]

update
```
public void update(byte[] b,
                   int off,
                   int len)
```
Updates the 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

Throws:

ArrayIndexOutOfBoundsException - if off is negative, or len is negative, or off+len is negative or greater than the length of the array b.

method:update(java.nio.ByteBuffer) [NONE]

update
```
public void update(ByteBuffer buffer)
```
Updates the checksum with the bytes from the specified buffer. The checksum is updated with the remaining bytes in the buffer, starting at the buffer's position. Upon return, the buffer's position will be updated to its limit; its limit will not have been changed.

Specified by:

update in interface Checksum

Parameters:

buffer - the ByteBuffer to update the checksum with

Since:

1.8

method:reset() [NONE]

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

Specified by:

reset in interface Checksum

method:getValue() [NONE]

getValue
```
public long getValue()
```
Returns the checksum value.

Specified by:

getValue in interface Checksum

Returns:

the current checksum value

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