Package org.apache.commons.io.output
Class NullWriter
java.lang.Object
java.io.Writer
org.apache.commons.io.output.NullWriter
- All Implemented Interfaces:
Closeable,Flushable,Appendable,AutoCloseable
Never writes data. Calls never go beyond this class.
This Writer has no destination (file/socket etc.) and all characters written to it are ignored and lost.
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final NullWriterThe singleton instance.static final NullWriterDeprecated. -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionappend(char c) Does nothing - output to/dev/null.append(CharSequence csq) Does nothing - output to/dev/null.append(CharSequence csq, int start, int end) Does nothing - output to/dev/null.voidclose()voidflush()voidwrite(char[] chr) Does nothing - output to/dev/null.voidwrite(char[] chr, int st, int end) Does nothing - output to/dev/null.voidwrite(int idx) Does nothing - output to/dev/null.voidDoes nothing - output to/dev/null.voidDoes nothing - output to/dev/null.
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Field Details
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INSTANCE
The singleton instance.- Since:
- 2.12.0
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NULL_WRITER
Deprecated.UseINSTANCE.The singleton instance.
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Constructor Details
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NullWriter
Deprecated.UseINSTANCE.Constructs a new NullWriter.
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Method Details
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append
Does nothing - output to/dev/null.- Specified by:
appendin interfaceAppendable- Overrides:
appendin classWriter- Parameters:
c- The character to write- Returns:
- this writer
- Since:
- 2.0
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append
Does nothing - output to/dev/null.- Specified by:
appendin interfaceAppendable- Overrides:
appendin classWriter- Parameters:
csq- The character sequence to write- Returns:
- this writer
- Since:
- 2.0
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append
Does nothing - output to/dev/null.- Specified by:
appendin interfaceAppendable- Overrides:
appendin 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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close
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flush
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write
Does nothing - output to/dev/null. -
write
Does nothing - output to/dev/null. -
write
Does nothing - output to/dev/null. -
write
Does nothing - output to/dev/null. -
write
Does nothing - output to/dev/null.
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INSTANCE.