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Summary: Ctors | Methods | Inherited Methods

Adler32

public class Adler32
extends Object implements Checksum

java.lang.Object
↳	java.util.zip.Adler32

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.

See also:

Checksum

Summary

Public constructors
`Adler32()` Creates a new Adler32 object.

Public methods
`long`	`getValue()` Returns the checksum value.
`void`	`reset()` Resets the checksum to initial value.
`void`	`update(byte[] b)` Updates the checksum with the specified array of bytes.
`void`	`update(ByteBuffer buffer)` Updates the checksum with the bytes from the specified buffer.
`void`	`update(byte[] b, int off, int len)` Updates the checksum with the specified array of bytes.
`void`	`update(int b)` Updates the checksum with the specified byte (the low eight bits of the argument b).

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

From interface


        
          java.util.zip.Checksum

`abstract long`	`getValue()` Returns the current checksum value.
`abstract void`	`reset()` Resets the checksum to its initial value.
`abstract void`	`update(byte[] b, int off, int len)` Updates the current checksum with the specified array of bytes.
`abstract void`	`update(int b)` Updates the current checksum with the specified byte.

Public constructors

Adler32

public Adler32 ()

Creates a new Adler32 object.

Public methods

getValue

public long getValue ()

Returns the checksum value.

Returns
`long`	the current checksum value

reset

public void reset ()

Resets the checksum to initial value.

update

public void update (byte[] b)

Updates the checksum with the specified array of bytes.

Parameters
`b`	`byte`: the byte array to update the checksum with

update

public void update (ByteBuffer buffer)

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

Parameters
`buffer`	`ByteBuffer`: the ByteBuffer to update the checksum with

update

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

Updates the checksum with the specified array of bytes.

Parameters
`b`	`byte`: the byte array to update the checksum with
`off`	`int`: the start offset of the data
`len`	`int`: the number of bytes to use for the update

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

update

public void update (int b)

Updates the checksum with the specified byte (the low eight bits of the argument b).

Parameters
`b`	`int`: the byte to update the checksum with

Interfaces

Classes

Exceptions

Errors

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Adler32

Summary

Public constructors

Public methods

Inherited methods

Public constructors

Adler32

Public methods

getValue

reset

update

update

update

update