This documentation differs from the official API. Jadeite adds extra features to the API including: variable font sizes, constructions examples, placeholders for classes and methods, and auto-generated “See Also” links. Additionally it is missing some items found in standard Javadoc documentation, including: generics type information, “Deprecated” tags and comments, “See Also” links, along with other minor differences. Please send any questions or feedback to bam@cs.cmu.edu.


java.io
class PipedReader

java.lang.Object extended by java.io.Reader extended by java.io.PipedReader
All Implemented Interfaces:
Closeable, Readable

Most common way to construct:

PipedReader reader = new PipedReader();

Based on 38 examples


public class PipedReader
extends Reader

Piped character-input streams.

See Also (auto-generated):

BufferedReader

PipedWriter

PrintWriter


Field Summary
 
Fields inherited from class java.io.Reader
lock
 
Constructor Summary

          Creates a PipedReader so that it is not yet java.io.PipedReader.connect.
PipedReader(int pipeSize)

          Creates a PipedReader so that it is not yet java.io.PipedReader.connect and uses the specified pipe size for the pipe's buffer.

          Creates a PipedReader so that it is connected to the piped writer src.
PipedReader(PipedWriter src, int pipeSize)

          Creates a PipedReader so that it is connected to the piped writer src and uses the specified pipe size for the pipe's buffer.
 
Method Summary
 void

          Closes this piped stream and releases any system resources associated with the stream.
 void

          Causes this piped reader to be connected to the piped writer src.
 int

          Reads the next character of data from this piped stream.
 int
read(char[] cbuf, int off, int len)

          Reads up to len characters of data from this piped stream into an array of characters.
 boolean

          Tell whether this stream is ready to be read.
 
Methods inherited from class java.io.Reader
close, mark, markSupported, read, read, read, read, ready, reset, skip
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

PipedReader

public PipedReader()
Creates a PipedReader so that it is not yet {@linkplain #connect(java.io.PipedWriter) connected}. It must be {@linkplain java.io.PipedWriter#connect( java.io.PipedReader) connected} to a PipedWriter before being used.


PipedReader

public PipedReader(int pipeSize)
Creates a PipedReader so that it is not yet {@link #connect(java.io.PipedWriter) connected} and uses the specified pipe size for the pipe's buffer. It must be {@linkplain java.io.PipedWriter#connect( java.io.PipedReader) connected} to a PipedWriter before being used.

Parameters:
pipeSize - the size of the pipe's buffer.

PipedReader

public PipedReader(PipedWriter src)
            throws IOException
Creates a PipedReader so that it is connected to the piped writer src. Data written to src will then be available as input from this stream.

Parameters:
src - the stream to connect to.
Throws:
IOException - if an I/O error occurs.

PipedReader

public PipedReader(PipedWriter src,
                   int pipeSize)
            throws IOException
Creates a PipedReader so that it is connected to the piped writer src and uses the specified pipe size for the pipe's buffer. Data written to src will then be available as input from this stream.

Parameters:
src - the stream to connect to.
pipeSize - the size of the pipe's buffer.
Throws:
IOException - if an I/O error occurs.
Method Detail

close

public void close()
           throws IOException
Closes this piped stream and releases any system resources associated with the stream.

Overrides:
close in class Reader
Throws:
IOException - if an I/O error occurs.

connect

public void connect(PipedWriter src)
             throws IOException
Causes this piped reader to be connected to the piped writer src. If this object is already connected to some other piped writer, an IOException is thrown.

If src is an unconnected piped writer and snk is an unconnected piped reader, they may be connected by either the call:

snk.connect(src) 

or the call:

src.connect(snk) 

The two calls have the same effect.

Parameters:
src - The piped writer to connect to.
Throws:
IOException - if an I/O error occurs.

read

public synchronized int read()
                      throws IOException
Reads the next character of data from this piped stream. If no character is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.

Overrides:
read in class Reader
Returns:
the next character of data, or -1 if the end of the stream is reached.
Throws:
IOException - if the pipe is broken, {@link #connect(java.io.PipedWriter) unconnected}, closed, or an I/O error occurs.

read

public synchronized int read(char[] cbuf,
                             int off,
                             int len)
                      throws IOException
Reads up to len characters of data from this piped stream into an array of characters. Less than len characters will be read if the end of the data stream is reached or if len exceeds the pipe's buffer size. This method blocks until at least one character of input is available.

Overrides:
read in class Reader
Parameters:
cbuf - the buffer into which the data is read.
off - the start offset of the data.
len - the maximum number of characters read.
Returns:
the total number of characters read into the buffer, or -1 if there is no more data because the end of the stream has been reached.
Throws:
IOException - if the pipe is broken, {@link #connect(java.io.PipedWriter) unconnected}, closed, or an I/O error occurs.

ready

public synchronized boolean ready()
                           throws IOException
Tell whether this stream is ready to be read. A piped character stream is ready if the circular buffer is not empty.

Overrides:
ready in class Reader
Throws:
IOException - if the pipe is broken, {@link #connect(java.io.PipedWriter) unconnected}, or closed.


This documentation differs from the official API. Jadeite adds extra features to the API including: variable font sizes, constructions examples, placeholders for classes and methods, and auto-generated “See Also” links. Additionally it is missing some items found in standard Javadoc documentation, including: generics type information, “Deprecated” tags and comments, “See Also” links, along with other minor differences. Please send any questions or feedback to bam@cs.cmu.edu.
This page displays the Jadeite version of the documention, which is derived from the offical documentation that contains this copyright notice:
Copyright 2008 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.
The official Sun™ documentation can be found here at http://java.sun.com/javase/6/docs/api/.