org.apache.logging.log4j.core.util

Class NullOutputStream

java.lang.Object

java.io.OutputStream

org.apache.logging.log4j.core.util.NullOutputStream

All Implemented Interfaces:

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

public class NullOutputStream
extends java.io.OutputStream

Writes all data to the famous /dev/null.

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

Originally from Apache Commons IO.

Since:

2.3

Field Summary

Fields

Modifier and Type	Field and Description
private static NullOutputStream	INSTANCE
static NullOutputStream	NULL_OUTPUT_STREAM Deprecated. Deprecated in 2.7: use getInstance().

Constructor Summary

Constructors

Modifier	Constructor and Description
private	NullOutputStream()

Method Summary

Modifier and Type	Method and Description
static NullOutputStream	getInstance() Gets the singleton instance.
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 Detail

INSTANCE

private static final NullOutputStream INSTANCE

NULL_OUTPUT_STREAM

@Deprecated
public static final NullOutputStream NULL_OUTPUT_STREAM

Deprecated. Deprecated in 2.7: use getInstance().

Constructor Detail

NullOutputStream

private NullOutputStream()

Method Detail

getInstance

public static NullOutputStream getInstance()

Gets the singleton instance.

Returns:

the singleton instance.

write

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

Does nothing - output to /dev/null.

Overrides:

write in class java.io.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 java.io.OutputStream

Parameters:

b - The byte to write

write

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

Does nothing - output to /dev/null.

Overrides:

write in class java.io.OutputStream

Parameters:

b - The bytes to write

Throws:

java.io.IOException - never