nl.knowledgeplaza.util.io
Class TeeOutputStream

java.lang.Object
  java.io.OutputStream
      nl.knowledgeplaza.util.io.TeeOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable

public class TeeOutputStream
extends java.io.OutputStream

This class mirrors output between two streams. One sample usage of this is: (with no regard to exceptions);

 // setup a log file 
 FileOutputStream fout = new FileOutputStream("datafile");

 // setup a TeeOutputStream for that file and standard out.
 TeeOutputStream teeOut = new TeeOutputStream(System.out, fout);

 // Wrap the output stream in a PrintStream for added functionality 
 PrintStream loggedOutput = new PrintStream(teeOut);

 // reset standard out to our new tee'd stream set
 System.setOut(loggedOutput);

 // print to both underlying output streams 
 System.out.println("Hello there");

 

See Also:

OutputStream

Constructor Summary

TeeOutputStream(java.io.OutputStream first, java.io.OutputStream second)
The constructor takes two OutputStreams.

Method Summary

void	close() Close the underlying OutputStreams.
void	flush() Flush both underlying OutputStreams.
void	write(int i) Write the specified int to each of the underlying OutputStreams.

Methods inherited from class java.io.OutputStream

write, write

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TeeOutputStream

public TeeOutputStream(java.io.OutputStream first,
                       java.io.OutputStream second)

The constructor takes two OutputStreams. It will mirror any calls to each OutputStream.

Parameters:

first - The first output stream

second - The second output stream

Method Detail

write

public void write(int i)
           throws java.io.IOException

Write the specified int to each of the underlying OutputStreams.

Specified by:

write in class java.io.OutputStream

Parameters:

i - The int to write to the underlying streams.

Throws:

java.io.IOException - If one of the underlying streams throws it.

flush

public void flush()
           throws java.io.IOException

Flush both underlying OutputStreams.

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.OutputStream

Throws:

java.io.IOException - If one of the underlying streams throws it.

close

public void close()
           throws java.io.IOException

Close the underlying OutputStreams.

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.OutputStream

Throws:

java.io.IOException - If one of the underlying streams throws it.