org.knime.base.util
Class NullPrintStream

java.lang.Object
  java.io.OutputStream
      java.io.FilterOutputStream
          java.io.PrintStream
              org.knime.base.util.NullPrintStream

All Implemented Interfaces:

Closeable, Flushable, Appendable

public final class NullPrintStream
extends PrintStream

Very simple stream that just swallows everything that is written to it. This class is a singleton, use the INSTANCE field to get access to the its single instance.

Author:

Thorsten Meinl, University of Konstanz

Field Summary

static NullPrintStream

INSTANCE The singleton instance of this NullPrintStream.

Fields inherited from class java.io.FilterOutputStream

out

Method Summary

PrintStream	append(char c)
PrintStream	append(CharSequence csq)
PrintStream	append(CharSequence csq, int start, int end)
boolean	checkError()
void	close()
void	flush()
PrintStream	format(Locale l, String format, Object... args)
PrintStream	format(String format, Object... args)
void	print(boolean b)
void	print(char c)
void	print(char[] s)
void	print(double d)
void	print(float f)
void	print(int i)
void	print(long l)
void	print(Object obj)
void	print(String s)
PrintStream	printf(Locale l, String format, Object... args)
PrintStream	printf(String format, Object... args)
void	println()
void	println(boolean x)
void	println(char x)
void	println(char[] x)
void	println(double x)
void	println(float x)
void	println(int x)
void	println(long x)
void	println(Object x)
void	println(String x)
void	write(byte[] buf, int off, int len)
void	write(int b)

Methods inherited from class java.io.PrintStream

clearError, setError

Methods inherited from class java.io.FilterOutputStream

write

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final NullPrintStream INSTANCE

The singleton instance of this NullPrintStream.

Method Detail

append

public PrintStream append(char c)

Specified by:

append in interface Appendable

Overrides:

append in class PrintStream

append

public PrintStream append(CharSequence csq,
                          int start,
                          int end)

Specified by:

append in interface Appendable

Overrides:

append in class PrintStream

append

public PrintStream append(CharSequence csq)

Specified by:

append in interface Appendable

Overrides:

append in class PrintStream

checkError

public boolean checkError()

Overrides:

checkError in class PrintStream

close

public void close()

Specified by:

close in interface Closeable

Overrides:

close in class PrintStream

flush

public void flush()

Specified by:

flush in interface Flushable

Overrides:

flush in class PrintStream

format

public PrintStream format(Locale l,
                          String format,
                          Object... args)

Overrides:

format in class PrintStream

format

public PrintStream format(String format,
                          Object... args)

Overrides:

format in class PrintStream

print

public void print(boolean b)

Overrides:

print in class PrintStream

print

public void print(char c)

Overrides:

print in class PrintStream

print

public void print(char[] s)

Overrides:

print in class PrintStream

print

public void print(double d)

Overrides:

print in class PrintStream

print

public void print(float f)

Overrides:

print in class PrintStream

print

public void print(int i)

Overrides:

print in class PrintStream

print

public void print(long l)

Overrides:

print in class PrintStream

print

public void print(Object obj)

Overrides:

print in class PrintStream

print

public void print(String s)

Overrides:

print in class PrintStream

printf

public PrintStream printf(Locale l,
                          String format,
                          Object... args)

Overrides:

printf in class PrintStream

printf

public PrintStream printf(String format,
                          Object... args)

Overrides:

printf in class PrintStream

println

public void println()

Overrides:

println in class PrintStream

println

public void println(boolean x)

Overrides:

println in class PrintStream

println

public void println(char x)

Overrides:

println in class PrintStream

println

public void println(char[] x)

Overrides:

println in class PrintStream

println

public void println(double x)

Overrides:

println in class PrintStream

println

public void println(float x)

Overrides:

println in class PrintStream

println

public void println(int x)

Overrides:

println in class PrintStream

println

public void println(long x)

Overrides:

println in class PrintStream

println

public void println(Object x)

Overrides:

println in class PrintStream

println

public void println(String x)

Overrides:

println in class PrintStream

write

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

Overrides:

write in class PrintStream

write

public void write(int b)

Overrides:

write in class PrintStream