java.util.zip: public class: Adler32

java.util.zip
public class: Adler32 [javadoc | source]

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

All Implemented Interfaces:
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.

Also see:

Checksum

author: David - Connelly

Constructor:
public Adler32() { } Creates a new Adler32 object.

Constructor:

 public Adler32() {

}

Creates a new Adler32 object.

Method from java.util.zip.Adler32 Summary:
getValue, reset, update, update, update

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

Method from java.util.zip.Adler32 Detail:
public long getValue() { return (long)adler & 0xffffffffL; } Returns checksum value.
public void reset() { adler = 1; } Resets checksum to initial value.
public void update(int b) { adler = update(adler, b); } Updates checksum with specified byte.
public void update(byte[] b) { adler = updateBytes(adler, b, 0, b.length); } Updates checksum with specified array of bytes.
public void update(byte[] b, int off, int len) { if (b == null) { throw new NullPointerException(); } if (off < 0 \|\| len < 0 \|\| off > b.length - len) { throw new ArrayIndexOutOfBoundsException(); } adler = updateBytes(adler, b, off, len); } Updates checksum with specified array of bytes.

Method from java.util.zip.Adler32 Detail:

 public long getValue() {
        return (long)adler & 0xffffffffL;
}

Returns checksum value.

 public  void reset() {
        adler = 1;
}

Resets checksum to initial value.

 public  void update(int b) {
        adler = update(adler, b);
}

Updates checksum with specified byte.

 public  void update(byte[] b) {
        adler = updateBytes(adler, b, 0, b.length);
}

Updates checksum with specified array of bytes.

 public  void update(byte[] b,
    int off,
    int len) {
        if (b == null) {
            throw new NullPointerException();
        }
        if (off <  0 || len <  0 || off  > b.length - len) {
            throw new ArrayIndexOutOfBoundsException();
        }
        adler = updateBytes(adler, b, off, len);
}

Updates checksum with specified array of bytes.