JavaTM 2 Platform
Std. Ed. v1.3.1

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

JavaTM 2 Platform
Std. Ed. v1.3.1

Submit a bug or feature
For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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