Package org.apache.logging.log4j.core.util

Class NullOutputStream

java.lang.Object

java.io.OutputStream

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

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class NullOutputStream
extends 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	Description
static final NullOutputStream	NULL_OUTPUT_STREAM	Deprecated. Deprecated in 2.7: use getInstance().

Method Summary

Modifier and Type	Method	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 Details

NULL_OUTPUT_STREAM

@Deprecated
public static final NullOutputStream NULL_OUTPUT_STREAM

Deprecated.

Deprecated in 2.7: use getInstance().

Method Details

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 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

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