Introduction
The Java.io PipedWriter is the class used for writing the content of the pipe as a character stream. The piped writer class is subclass to writer class. The Java.io PipedWriter is connected with the same pipe writer but both are processed by two different threads.In case of piped writer call the close method explicitly.
Declaration
Java.io PipedWriter class is declared below:
Public class PipedWriter extends Writer Fields
Java.io PipedWriter class fields are:
- Protected Object lock : The field represents for synchronize operations this object is used.
Table
| Constructor | Description |
|---|---|
| PipedWriter() | The function of this constructor is to create the piped writer instance and not connected with piped reader. |
| PipedWriter(PipedReader snk) | The function of this constructor is to create the piped writer instance which is connected to the represented piped reader. |
Table
| Method | Description |
|---|---|
| void close () | The function of this method is to close the present stream and associated to input stream systems resources are released. |
| void connect(pipedReader snk) | The function of this method is to connect the piped writer is with piped reader . |
| void write(Char[] cbuf, int off, int n) | By using this method it writes the data up to ‘n’ length from the output stream to an array of Characters. |
| void write(int c) | The function of this method is to write the represented character into output stream. |
Description
From the following classes, methods are inherited to the piped writer class.
- Java.io.Object
- Java.io.Writer
Examples
Usage of void close() method.
[c]import java.io.*;
public class PipedWriter
{
public static void main(String[] args)
{
// creating a new Piped writer and piped reader
PipedWriter writer = new PipedWriter();
PipedReader reader = new PipedReader();
try {
// connect the reader and writer
writer.connect(reader);
// write something
writer.write(83);
writer.write(80);
// To close the writer
System.out.println("Closing writer...........");
writer.close();
System.out.println("Writer closed.");
// print what we wrote above
for (int i = 0; i < 2; i++) {
System.out.println("" + (char) reader.read());
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
}[/c]
Output
Following is the result will be as follows.
[c]Closing writer...........
Writer closed.
S
P
[/c]
Usage of void connect(pipedReader snk) method.
[c]import java.io.*;
public class PipedWriter
{
public static void main(String[] args)
{
// creating a new Piped writer and piped reader
PipedWriter writer = new PipedWriter();
PipedReader reader = new PipedReader();
try {
// To connect the reader and writer
writer.connect(reader);
// write something
writer.write(83);
writer.write(80);
writer.write(76);
writer.write(69);
writer.write(83);
writer.write(83);
writer.write(79);
writer.write(78);
// print what we wrote above
for (int i = 0; i < 8; i++) {
System.out.println("" + (char) reader.read());
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
}[/c]
Output
Following is the result will be as follows.
[c]
S
P
L
E
S
S
O
N
[/c]
Key Points
- The piped writer is the class used for writing the content of the pipe as a character stream.
- The piped writer class is subclass to writer class.
- The pipe writer is connected with the same pipe writer but both are processed by two different threads.