org.freehep.util.io
Class UniquePrintStream

java.lang.Object
  java.io.OutputStream
      java.io.FilterOutputStream
          java.io.PrintStream
              org.freehep.util.io.UniquePrintStream

All Implemented Interfaces:

Closeable, Flushable, Appendable, FinishableOutputStream

public class UniquePrintStream
extends PrintStream
implements FinishableOutputStream

The UniquePrintStream keeps Strings buffered in sorted order, but any duplicates are removed. This stream can be used to print error messages exactly once. When finish is called all messages are printed. It only acts on the println(String) method, any other method will print directly.

Version:

$Id: UniquePrintStream.java 8584 2006-08-10 23:06:37Z duns $

Author:

Mark Donszelmann

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

UniquePrintStream(OutputStream out)
Create a Unique Print Stream.

Method Summary

void	finish() Finishes the current outputstream (compresses, flushes, caluclates CRC) and writes whatever is left in the buffers, but does not close the stream.
void	println(String s)

Methods inherited from class java.io.PrintStream

append, append, append, append, append, append, checkError, close, flush, format, format, print, print, print, print, print, print, print, print, print, printf, printf, println, println, println, println, println, println, println, println, println, setError, write, write

Methods inherited from class java.io.FilterOutputStream

write

Methods inherited from class java.lang.Object

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

Constructor Detail

UniquePrintStream

public UniquePrintStream(OutputStream out)

Create a Unique Print Stream.

Parameters:

out - stream to write

Method Detail

println

public void println(String s)

Overrides:

println in class PrintStream

finish

public void finish()

Description copied from interface: FinishableOutputStream

Finishes the current outputstream (compresses, flushes, caluclates CRC) and writes whatever is left in the buffers, but does not close the stream.

Specified by:

finish in interface FinishableOutputStream