java.io

Class PipedReader

Implemented Interfaces:
Closeable, Readable

public class PipedReader
extends Reader

Piped character-input streams.
Since:
JDK1.1

Field Summary

Fields inherited from class java.io.Reader

lock

Constructor Summary

PipedReader()
Creates a PipedReader so that it is not yet connected.
PipedReader(PipedWriter src)
Creates a PipedReader so that it is connected to the piped writer src.

Method Summary

void
close()
Closes this piped stream and releases any system resources associated with the stream.
void
connect(PipedWriter src)
Causes this piped reader to be connected to the piped writer src.
int
read()
Reads the next character of data from this piped stream.
int
read(cbuf[] , int off, int len)
Reads up to len characters of data from this piped stream into an array of characters.
boolean
ready()
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, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PipedReader

public PipedReader()
Creates a PipedReader so that it is not yet connected. It must be connected to a PipedWriter before being used.
Usages and Demos :

View More Examples of PipedReader()
   1: class LoggerDaemon extends Thread {
   2:     PipedReader in = new PipedReader(  );
   3: 
   4:     LoggerDaemon(  ) {
   5:         start(  );

View Full Code Here
   1:     public SimulatedInput() throws IOException {
   2:         pipedReader = new PipedReader();
   3:         pipedWriter = new PipedWriter();
   4:         pipedWriter.connect(pipedReader);
   5:     }

View Full Code Here
   1: 
   2:         PipedReader r = new PipedReader();
   3:         try {            
   4:             connect(r);
   5:             link = new CharTransformerLink(charTransformer, r, out, false);

View Full Code Here
   1:         pipe = new PipedWriter();
   2:         in = new PipedReader();
   3:         try {
   4:             pipe.connect(in);
   5:         } catch (IOException exc) {

View Full Code Here
   1:     {
   2:         PipedReader in = new PipedReader();
   3:         PipedWriter pout = new PipedWriter(in);
   4:         PrintWriter out = new PrintWriter(pout, true);
   5:         out.close();

View Full Code Here

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.
Usages and Demos :

View More Examples of PipedReader(PipedWriter src)
   1:         PipedWriter pipeOut = new PipedWriter();
   2:         PipedReader pipeIn = new PipedReader(pipeOut);
   3:         
   4:         ...
   5:         PipedWriter pipeOut = new PipedWriter();
   6:         PipedReader pipeIn = new PipedReader(pipeOut);
   7:         PrintWriter out = new PrintWriter(pipeOut);
   8: 
   9:         new SortThread(out, in).start();

View Full Code Here
   1:   public Receiver(Sender sender) throws IOException {
   2:     in = new PipedReader(sender.getPipedWriter());
   3:   }
   4:   public void run() {
   5:     try {

View Full Code Here
   1:             pipeOut = new PipedWriter();
   2:             pipeIn = new PipedReader(pipeOut);
   3: 
   4:         } catch (IOException e) {
   5:             System.out.println(e);

View Full Code Here
   1:     try {
   2:       vstup = new PipedReader(vystup);
   3:     } catch(IOException e) {
   4:       System.err.println("PipedReader problem");
   5:     }

View Full Code Here

Method Details

close

public void close()
            throws IOException
Closes this piped stream and releases any system resources associated with the stream.
Specified by:
close in interface Closeable
Overrides:
close in interface 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 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. If a thread was providing data characters to the connected piped writer, but the thread is no longer alive, then an IOException is thrown.
Overrides:
read in interface Reader
Returns:
the next character of data, or -1 if the end of the stream is reached.
Throws:
IOException - if the pipe is broken.
Usages and Demos :

View More Examples of read()
   1: class Receiver implements Runnable {
   2:   private PipedReader in;
   3:   public Receiver(Sender sender) throws IOException {
   4:         ...
   5:     in = new PipedReader(sender.getPipedWriter());
   6:   }
   7:         ...
   8:       while(true) {
   9:         printnb("Read: " + (char)in.read() + ", ");
  10:       }

View Full Code Here

read

public int read(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. This method blocks until at least one character of input is available. If a thread was providing data characters to the connected piped output, but the thread is no longer alive, then an IOException is thrown.
Overrides:
read in interface Reader
Parameters:
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 an I/O error occurs.

ready

public 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 interface Reader
Throws:
IOException - If an I/O error occurs