org.ka2ddo.util
Class DualOutputStream

java.lang.Object
  extended by java.io.OutputStream
      extended by java.io.FilterOutputStream
          extended by org.ka2ddo.util.DualOutputStream
All Implemented Interfaces:
java.io.Closeable, java.io.Flushable

public class DualOutputStream
extends java.io.FilterOutputStream

This FilterOutputStream subclass directs its output to both its primary and alternate contained streams.


Field Summary
 
Fields inherited from class java.io.FilterOutputStream
out
 
Constructor Summary
DualOutputStream(java.io.OutputStream out1, java.io.OutputStream out2)
          Creates an output stream filter built on top of the specified two underlying output streams.
 
Method Summary
 void close()
          Closes this output stream and releases any system resources associated with the stream.
 void flush()
          Flushes this output stream and forces any buffered output bytes to be written out to the stream.
 void write(byte[] b)
          Writes b.length bytes to this output stream.
 void write(byte[] b, int off, int len)
          Writes len bytes from the specified byte array starting at offset off to this output stream.
 void write(int b)
          Writes the specified byte to this output stream.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

DualOutputStream

public DualOutputStream(java.io.OutputStream out1,
                        java.io.OutputStream out2)
Creates an output stream filter built on top of the specified two underlying output streams.

Parameters:
out1 - the underlying output stream to be assigned to the field this.out for later use, or null if this instance is to be created without an underlying stream.
out2 - the second output stream which should get a copy of all bytes written to this stream.
Method Detail

write

public void write(int b)
           throws java.io.IOException
Writes the specified byte to this output stream.

The write method of FilterOutputStream calls the write method of its underlying output stream, that is, it performs out.write(b).

Overrides:
write in class java.io.FilterOutputStream
Parameters:
b - the byte.
Throws:
java.io.IOException - if an I/O error occurs.

write

public void write(byte[] b)
           throws java.io.IOException
Writes b.length bytes to this output stream.

The write method of DualOutputStream calls its write method of three arguments with the arguments b, 0, and b.length.

Overrides:
write in class java.io.FilterOutputStream
Parameters:
b - the data to be written.
Throws:
java.io.IOException - if an I/O error occurs.
See Also:
FilterOutputStream.write(byte[], int, int)

write

public void write(byte[] b,
                  int off,
                  int len)
           throws java.io.IOException
Writes len bytes from the specified byte array starting at offset off to this output stream.

Overrides:
write in class java.io.FilterOutputStream
Parameters:
b - the data.
off - the start offset in the data.
len - the number of bytes to write.
Throws:
java.io.IOException - if an I/O error occurs.
See Also:
FilterOutputStream.write(int)

flush

public void flush()
           throws java.io.IOException
Flushes this output stream and forces any buffered output bytes to be written out to the stream.

The flush method of DualOutputStream calls the flush method of its underlying output streams.

Specified by:
flush in interface java.io.Flushable
Overrides:
flush in class java.io.FilterOutputStream
Throws:
java.io.IOException - if an I/O error occurs.
See Also:
FilterOutputStream.out

close

public void close()
           throws java.io.IOException
Closes this output stream and releases any system resources associated with the stream.

Specified by:
close in interface java.io.Closeable
Overrides:
close in class java.io.FilterOutputStream
Throws:
java.io.IOException - if an I/O error occurs.
See Also:
FilterOutputStream.flush(), FilterOutputStream.out