Adler32

The Adler-32 class is used to compute the


        Adler32

checksum from a set of data. Compared to


        
         CRC32

it trades reliability for speed. Refer to RFC 1950 for the specification.

Summary

Public Constructors
	Adler32 ()

Public Constructors

Adler32 ()

Public Methods
long	getValue () Returns the `Adler32` checksum for all input received.
void	reset () Reset this instance to its initial checksum.
void	update (byte[] buf, int offset, int byteCount) Update this `Adler32` checksum with the contents of `buf` , starting from `offset` and reading `byteCount` bytes of data.
void	update (int i) Update this `Adler32` checksum with the single byte provided as argument.
void	update (byte[] buf) Update this `Adler32` checksum using the contents of `buf` .

Public Methods

long

getValue ()

Returns the


           Adler32

checksum for all input received.

void

reset ()

Reset this instance to its initial checksum.

void

update (byte[] buf, int offset, int byteCount)

Update this


           Adler32

checksum with the contents of

buf

, starting from


           offset

and reading


           byteCount

bytes of data.

void

update (int i)

Update this


           Adler32

checksum with the single byte provided as argument.

void

update (byte[] buf)

Update this


           Adler32

checksum using the contents of

buf

[Expand]

Inherited Methods

From class java.lang.Object

Object	clone () Creates and returns a copy of this `Object` .
boolean	equals ( Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize () Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class <?>	getClass () Returns the unique instance of `Class` that represents this object's class.
int	hashCode () Returns an integer hash code for this object.
final void	notify () Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll () Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString () Returns a string containing a concise, human-readable description of this object.
final void	wait () Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait (long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait (long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

From interface java.util.zip.Checksum

Public Methods

public long getValue ()

Added in API level 1

Returns the Adler32 checksum for all input received.

Returns

The checksum for this instance.

public void reset ()

Added in API level 1

Reset this instance to its initial checksum.

public void update (byte[] buf, int offset, int byteCount)

Added in API level 1

Update this Adler32 checksum with the contents of buf , starting from offset and reading byteCount bytes of data.

Parameters

buf	the byte array from which to read the bytes.
offset	the initial position in `buf` to read the bytes from.
byteCount	the number of bytes to read from `buf` .

public void update (int i)

Added in API level 1

Update this Adler32 checksum with the single byte provided as argument.

Parameters

i	the byte to update checksum with.

public void update (byte[] buf)

Added in API level 1

Update this Adler32 checksum using the contents of buf .

Parameters

buf	bytes to update checksum with.

Results

Interfaces

Classes

Exceptions

Errors

Class Overview

Summary

Public Constructors

public Adler32 ()

Public Methods

public long getValue ()

Returns

public void reset ()

public void update (byte[] buf, int offset, int byteCount)

Parameters

public void update (int i)

Parameters

public void update (byte[] buf)

Parameters

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