Java.io.PipedOutputStream Class in Java
Java.io.PipedInputStream class in Java
Pipes in IO provide a link between two threads running in JVM at the same time. So, Pipes are used both as source or destination. Â
- PipedInputStream is also piped with PipedOutputStream. So, data can be written using PipedOutputStream and can be written using PipedInputStream.But, using both threads at the same time will create a deadlock for the threads.
- PipedOutputStream is sending end of the pipe. Data is written to the PipedOutputStream. The pipe is said to be broken if the PipedInputStream, that was reading the data is no more.
Declaration:Â Â
public class PipedOutputStream
extends OutputStream
Constructor:Â Â
- PipedOutputStream() : creates a PipedOutputStream, that it is not connected.
- PipedOutputStream(PipedOutputStream inStream) : creates a PipedOutputStream, that itÂ
is connected to PipedInputStream – ‘inStream’.
Methods:Â
write() : java.io.PipedOutputStream.write(int byte) writes a specified byte to the Piped Output Stream.Â
Syntax :Â
public void write(int byte)
Parameters :
byte : byte to be written
Return : void
Exception :
-> IOException : if in case IO error occurs.
write(byte[] buffer, int offset, int maxlen) : java.io.PipedOutputStream.write(byte[] buffer, int offset, int maxlen) writes maxlen bytes of the data from buffer to the Piped Output Stream. The method blocks if no bytes are written to the Stream.Â
Syntax :Â
public void write(byte[] buffer, int offset, int maxlen)
Parameters :
buffer : data of the buffer
offset : starting in the destination array - 'buffer'.
maxlen : maximum length of array to be read
Return : void
Exception :
-> IOException : if in case IO error occurs.
Java
import java.io.*;
public class NewClass
{
public static void main(String[] args) throws IOException
{
PipedInputStream geek_input = new PipedInputStream();
PipedOutputStream geek_output = new PipedOutputStream();
geek_input.connect(geek_output);
byte [] buffer = { 'J' , 'A' , 'V' , 'A' };
geek_output.write(buffer, 0 , 4 );
int a = 5 ;
System.out.print( "Use of write(buffer, offset, maxlen) : " );
while (a> 0 )
{
System.out.print( " " + ( char ) geek_input.read());
a--;
}
}
}
|
Output:Â
Use of write(buffer, offset, maxlen) : J A V A
- close() : java.io.PipedOutputStream.close() closes the Piped Output Stream and releases the allocated resources.Â
Syntax :Â
public void close()
Parameters :
--------------
Return :
void
Exception :
-> IOException : if in case IO error occurs.
- connect(PipedInputStream destination) : java.io.PipedOutputStream.connect(PipedInputStream destination connects the Piped Output Stream to the ‘destination’ Piped Input Stream and in case ‘destination’ is pipes with some other stream, IO exception is thrownÂ
Syntax :Â
public void connect(PipedInputStream destination)
Parameters :
destination : the Piped Input Stream to be connected to
Return :
void
Exception :
-> IOException : if in case IO error occurs.
- flush() : java.io.PipedOutputStream.flush() flushes the Output Stream.Â
Syntax :Â
public void flush()
Parameters :
------------
Return :
void
Exception :
-> IOException : if in case IO error occurs.
Java code illustrating the working of PipedOutputStream class methods :Â
Java
import java.io.*;
public class NewClass
{
public static void main(String[] args) throws IOException
{
PipedInputStream geek_input = new PipedInputStream();
PipedOutputStream geek_output = new PipedOutputStream();
try
{
geek_input.connect(geek_output);
geek_output.write( 71 );
geek_output.write( 69 );
geek_output.write( 69 );
geek_output.write( 75 );
geek_output.write( 83 );
geek_output.flush();
System.out.println( "Use of flush() method : " );
int i = 5 ;
while (i > 0 )
{
System.out.print( " " + ( char ) geek_input.read());
i--;
}
System.out.println( "\nClosing the Output stream" );
geek_output.close();
}
catch (IOException except)
{
except.printStackTrace();
}
}
}
|
Output:Â
Use of flush() method :
G E E K S
Closing the Output stream
Â
Last Updated :
05 Mar, 2024
Like Article
Save Article
Share your thoughts in the comments
Please Login to comment...