Package org.apache.commons.io.output
Class NullWriter
- java.lang.Object
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- java.io.Writer
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- org.apache.commons.io.output.NullWriter
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- All Implemented Interfaces:
Closeable
,Flushable
,Appendable
,AutoCloseable
public class NullWriter extends Writer
Writes all data to the famous /dev/null.This
Writer
has no destination (file/socket etc.) and all characters written to it are ignored and lost.
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Field Summary
Fields Modifier and Type Field Description static NullWriter
NULL_WRITER
A singleton.
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Constructor Summary
Constructors Constructor Description NullWriter()
Constructs a new NullWriter.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Writer
append(char c)
Does nothing - output to/dev/null
.Writer
append(CharSequence csq)
Does nothing - output to/dev/null
.Writer
append(CharSequence csq, int start, int end)
Does nothing - output to/dev/null
.void
close()
void
flush()
void
write(char[] chr)
Does nothing - output to/dev/null
.void
write(char[] chr, int st, int end)
Does nothing - output to/dev/null
.void
write(int idx)
Does nothing - output to/dev/null
.void
write(String str)
Does nothing - output to/dev/null
.void
write(String str, int st, int end)
Does nothing - output to/dev/null
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Methods inherited from class java.io.Writer
nullWriter
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Field Detail
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NULL_WRITER
public static final NullWriter NULL_WRITER
A singleton.
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Method Detail
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append
public Writer append(char c)
Does nothing - output to/dev/null
.- Specified by:
append
in interfaceAppendable
- Overrides:
append
in classWriter
- Parameters:
c
- The character to write- Returns:
- this writer
- Since:
- 2.0
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append
public Writer append(CharSequence csq, int start, int end)
Does nothing - output to/dev/null
.- Specified by:
append
in interfaceAppendable
- Overrides:
append
in classWriter
- Parameters:
csq
- The character sequence to writestart
- The index of the first character to writeend
- The index of the first character to write (exclusive)- Returns:
- this writer
- Since:
- 2.0
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append
public Writer append(CharSequence csq)
Does nothing - output to/dev/null
.- Specified by:
append
in interfaceAppendable
- Overrides:
append
in classWriter
- Parameters:
csq
- The character sequence to write- Returns:
- this writer
- Since:
- 2.0
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write
public void write(int idx)
Does nothing - output to/dev/null
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write
public void write(char[] chr)
Does nothing - output to/dev/null
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write
public void write(char[] chr, int st, int end)
Does nothing - output to/dev/null
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write
public void write(String str)
Does nothing - output to/dev/null
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write
public void write(String str, int st, int end)
Does nothing - output to/dev/null
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flush
public void flush()
- Specified by:
flush
in interfaceFlushable
- Specified by:
flush
in classWriter
- See Also:
Writer.flush()
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close
public void close()
- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Specified by:
close
in classWriter
- See Also:
Writer.close()
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