Class Overview
The Adler-32 class is used to compute the Adler32 checksum from a set
of data. Compared to the CRC-32 algorithm it trades reliabilty for speed.
Refer to RFC 1950 for the specification.
Summary
| Public Methods |
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long
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getValue()
Returns the Adler32 checksum for all input received.
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void
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reset()
Reset this instance to its initial checksum.
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void
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update(byte[] buf, int off, int nbytes)
Update this Adler32 checksum with the contents of buf,
starting from the offset provided and reading n bytes of data.
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void
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update(int i)
Update this Adler32 checksum with the single byte provided as
argument.
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void
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update(byte[] buf)
Update this Adler32 checksum using the contents of buf.
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[Expand]
Inherited Methods |
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From class java.lang.Object
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Object
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clone()
Creates and returns a copy of this Object.
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boolean
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equals(Object o)
Compares this instance with the specified object and indicates if they
are equal.
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void
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finalize()
Is called before the object's memory is being reclaimed by the VM.
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final
Class<? extends Object>
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getClass()
Returns the unique instance of Class which represents this
object's class. |
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int
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hashCode()
Returns an integer hash code for this object.
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final
void
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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.
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final
void
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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.
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String
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toString()
Returns a string containing a concise, human-readable description of this
object.
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final
void
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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.
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final
void
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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.
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final
void
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wait()
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.
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From interface java.util.zip.Checksum
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abstract
long
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getValue()
Returns the current calculated checksum value.
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abstract
void
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reset()
Resets the checksum value applied before beginning calculations on a new
stream of data.
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abstract
void
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update(int val)
Updates the checksum value with the given byte.
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abstract
void
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update(byte[] buf, int off, int nbytes)
Updates the checksum with the given bytes.
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Public Constructors
Public Methods
public
long
getValue
()
Returns the Adler32 checksum for all input received.
Returns
- The checksum for this instance.
public
void
reset
()
Reset this instance to its initial checksum.
public
void
update
(byte[] buf, int off, int nbytes)
Update this Adler32 checksum with the contents of buf,
starting from the offset provided and reading n bytes of data.
Parameters
| buf
| buffer to obtain data from. |
| off
| offset in buf to start reading from. |
| nbytes
| number of bytes from buf to use. |
public
void
update
(int i)
Update this Adler32 checksum with the single byte provided as
argument.
Parameters
| i
| the byte to update checksum with.
|
public
void
update
(byte[] buf)
Update this Adler32 checksum using the contents of buf.
Parameters
| buf
| bytes to update checksum with.
|
