com.Ostermiller.util
Class NoCloseReader

java.lang.Object
  java.io.Reader
      com.Ostermiller.util.NoCloseReader

All Implemented Interfaces:

NoCloseStream, Closeable, Readable

public class NoCloseReader
extends Reader
implements NoCloseStream

A reader which a close method with no effect. More information about this class is available from ostermiller.org.

This class is designed to wrap a normal reader so that it can be passed to methods that read from it and may erroneously close it. This class is a workaround when the method cannot be modified because it is in a library.

Since:

ostermillerutils 1.01.00

Field Summary

protected Reader

in The reader that is being protected.

Fields inherited from class java.io.Reader

lock

Constructor Summary

NoCloseReader(Reader in)
Protect a new reader.

Method Summary

void	close() Has no effect.
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(char[] cbuf)
int	read(char[] cbuf, int off, int len)
boolean	ready()
void	reallyClose() Actually closes this stream and releases any system resources associated with the stream, as opposed to the close() method, which does nothing.
void	reset()
long	skip(long n)

Methods inherited from class java.io.Reader

read

Methods inherited from class java.lang.Object

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

Field Detail

in

protected Reader in

The reader that is being protected. All methods should be forwarded to it, except for the close method, which should do nothing. The reallyClose method should actually close this stream.

Since:

ostermillerutils 1.01.00

Constructor Detail

NoCloseReader

public NoCloseReader(Reader in)

Protect a new reader.

Parameters:

in - The reader that is being protected.

Since:

ostermillerutils 1.01.00

Method Detail

read

public int read()
         throws IOException

Overrides:

read in class Reader

Throws:

IOException

read

public int read(char[] cbuf)
         throws IOException

Overrides:

read in class Reader

Throws:

IOException

read

public int read(char[] cbuf,
                int off,
                int len)
         throws IOException

Specified by:

read in class Reader

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class Reader

Throws:

IOException

ready

public boolean ready()
              throws IOException

Overrides:

ready in class Reader

Throws:

IOException

close

public void close()
           throws IOException

Has no effect.

Specified by:

close in interface Closeable

Specified by:

close in class Reader

Throws:

IOException

Since:

ostermillerutils 1.01.00

See Also:

reallyClose()

mark

public void mark(int readlimit)
          throws IOException

Overrides:

mark in class Reader

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class Reader

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class Reader

reallyClose

public void reallyClose()
                 throws IOException

Actually closes this stream and releases any system resources associated with the stream, as opposed to the close() method, which does nothing.

Specified by:

reallyClose in interface NoCloseStream

Throws:

IOException - if an I/O error occurs.