org.ka2ddo.util

Class DualOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

org.ka2ddo.util.DualOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

public class DualOutputStream
extends java.io.FilterOutputStream

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

Author:

Andrew Pavlin, KA2DDO

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor and Description
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

Modifier and Type	Method and Description
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

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.FilterOutputStream

Throws:

java.io.IOException - if an I/O error occurs.

See Also:

FilterOutputStream.flush(), FilterOutputStream.out