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java.io
Class FilterReader

java.lang.Object
  |
  +--java.io.Reader
        |
        +--java.io.FilterReader

Direct Known Subclasses:

PushbackReader

public abstract class FilterReader

extends Reader

Abstract class for reading filtered character streams.

Since:

JDK1.1

Field Summary

protected Reader

in The underlying character-input stream, or null if the stream has been closed.

Fields inherited from class java.io.Reader

lock

Constructor Summary

protected

FilterReader(Reader in) Create a new filtered reader.

Method Summary

void	close() Close the stream.
void	mark(int readAheadLimit) Mark the present position in the stream.
boolean	markSupported() Tell whether this stream supports the mark() operation.
int	read() Read a single character.
int	read(char[] cbuf, int off, int len) Read characters into a portion of an array.
boolean	ready() Tell whether this stream is ready to be read.
void	reset() Reset the stream.
long	skip(long n) Skip characters.

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 underlying character-input stream, or null if the stream has been closed.

Constructor Detail

FilterReader

protected FilterReader(Reader in)

Create a new filtered reader.

Parameters:

in - a Reader object providing the underlying stream.

Method Detail

read

public int read()
         throws IOException

Read a single character.

Overrides:

read in class Reader

Throws:

IOException - If an I/O error occurs

read

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

Read characters into a portion of an array.

Overrides:

read in class Reader

Throws:

IOException - If an I/O error occurs

skip

public long skip(long n)
          throws IOException

Skip characters.

Overrides:

skip in class Reader

Throws:

IOException - If an I/O error occurs

ready

public boolean ready()
              throws IOException

Tell whether this stream is ready to be read.

Overrides:

ready in class Reader

Throws:

IOException - If an I/O error occurs

markSupported

public boolean markSupported()

Tell whether this stream supports the mark() operation.

Overrides:

markSupported in class Reader

Following copied from class: java.io.Reader

Returns:

true if and only if this stream supports the mark operation.

mark

public void mark(int readAheadLimit)
          throws IOException

Mark the present position in the stream.

Overrides:

mark in class Reader

Throws:

IOException - If an I/O error occurs

reset

public void reset()
           throws IOException

Reset the stream.

Overrides:

reset in class Reader

Throws:

IOException - If an I/O error occurs

close

public void close()
           throws IOException

Close the stream.

Overrides:

close in class Reader

Throws:

IOException - If an I/O error occurs