Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

This class is a subclass of
java.io.FilterOutputStream that allows data to be
written to a stream and a checksum computed on that data at the same
time. To create a CheckedOutputStream, you must
specify both the output stream to write its data to and a
Checksum object, such as an instance of
Adler32, that implements the particular checksum
algorithm you desire. The write( ) methods are
similar to those of other OutputStream classes.
The getChecksum( ) method returns the
Checksum object. You must call getValue(
) on this object in order to obtain the actual checksum
value.

Figure 16-136. java.util.zip.CheckedOutputStream

public class

CheckedOutputStream extends java.io.FilterOutputStream {
// Public Constructors
public

CheckedOutputStream (java.io.OutputStream

out , Checksum

cksum );
// Public Instance Methods
public Checksum

getChecksum ( );
// Public Methods Overriding FilterOutputStream
public void

write (int

b ) throws java.io.IOException;
public void

write (byte[ ]

b , int

off , int

len ) throws java.io.IOException;
}