edu.nmu.io
Class DelegatedOutputStream

java.lang.Object
  |
  +--java.io.OutputStream
        |
        +--edu.nmu.io.DelegatedOutputStream

public class DelegatedOutputStream

extends java.io.OutputStream

Writes output to another OutputStream

By using delegation as a level of abstraction, applications can change the destination of output without needing to reference a new OutputStream. This is especially useful for changing the source of input for final references such as System.out

It is important to note that this class is not thread safe. A call to the delegated OutputStream could forseeably hang while another Thread calls setStream(OutputStream)

Since:

jdk1.4

Version:

1.0, 01/24/2003

Author:

Matt Murphy

Constructor Summary

DelegatedOutputStream(java.io.OutputStream out)
Creates a new DelegatedOutputStream from the specified OutputStream

Method Summary

void	close()
void	flush()
java.io.OutputStream	getStream() Gets the OutputStream used for delegation
void	setStream(java.io.OutputStream out) Sets a new OutputStream to be used for delegation
void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)

Methods inherited from class java.lang.Object

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

Constructor Detail

DelegatedOutputStream

public DelegatedOutputStream(java.io.OutputStream out)

Creates a new DelegatedOutputStream from the specified OutputStream

Parameters:

out - the OutputStream to which calls should be delegated

Method Detail

write

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

Specified by:

write in class java.io.OutputStream

java.io.IOException

write

public void write(byte[] b)
           throws java.io.IOException

Overrides:

write in class java.io.OutputStream

java.io.IOException

write

public void write(byte[] b,
                  int off,
                  int len)
           throws java.io.IOException

Overrides:

write in class java.io.OutputStream

java.io.IOException

flush

public void flush()
           throws java.io.IOException

Overrides:

flush in class java.io.OutputStream

java.io.IOException

close

public void close()
           throws java.io.IOException

Overrides:

close in class java.io.OutputStream

java.io.IOException

getStream

public java.io.OutputStream getStream()

Gets the OutputStream used for delegation

Returns:

the OutputStream

setStream

public void setStream(java.io.OutputStream out)

Sets a new OutputStream to be used for delegation

Parameters:

out - the OutputStream to which calls should be delegated