Package org.apache.commons.io.output

Class NullOutputStream

java.lang.Object

java.io.OutputStream

org.apache.commons.io.output.NullOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class NullOutputStream
extends OutputStream

Never writes data. Calls never go beyond this class.

This output stream has no destination (file/socket etc.) and all bytes written to it are ignored and lost.

Field Summary

Fields

Modifier and Type	Field	Description
static final NullOutputStream	INSTANCE	The singleton instance.
static final NullOutputStream	NULL_OUTPUT_STREAM	Deprecated. Use INSTANCE.

Constructor Summary

Constructors

Constructor	Description
NullOutputStream()	Deprecated. Use INSTANCE.

Method Summary

Modifier and Type	Method	Description
void	write(byte[] b)	Does nothing - output to /dev/null.
void	write(byte[] b, int off, int len)	Does nothing - output to /dev/null.
void	write(int b)	Does nothing - output to /dev/null.

Methods inherited from class java.io.OutputStream

close, flush

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

public static final NullOutputStream INSTANCE

The singleton instance.

Since:

2.12.0

NULL_OUTPUT_STREAM

@Deprecated
public static final NullOutputStream NULL_OUTPUT_STREAM

Deprecated.

Use INSTANCE.

The singleton instance.

Constructor Details

NullOutputStream

@Deprecated
public NullOutputStream()

Deprecated.

Use INSTANCE.

Deprecated in favor of INSTANCE. TODO: Will be private in 3.0.

Method Details

write

public void write(byte[] b)
           throws IOException

Does nothing - output to /dev/null.

Overrides:

write in class OutputStream

Parameters:

b - The bytes to write

Throws:

IOException - never

write

public void write(byte[] b,
 int off,
 int len)

Does nothing - output to /dev/null.

Overrides:

write in class OutputStream

Parameters:

b - The bytes to write

off - The start offset

len - The number of bytes to write

write

public void write(int b)

Does nothing - output to /dev/null.

Specified by:

write in class OutputStream

Parameters:

b - The byte to write