Java Io learning notes (6): Pipeline stream

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• Pipeline stream (thread communication Stream)

Pipeline stream (thread communication Stream)

The main function of a pipeline stream is to communicate between two threads, namely, pipedoutputstream and pipedinputstream ),If you want to output a pipe, you must put the output on the input stream.In the pipedoutputstream class, you can use the following method to connect to the MPs queue:

Public void connect (pipedinputstream SNK) throws ioexception

Example: pipe streams are used for communication between threads.

 1   Import Java. Io. ioexception;
 2   Import Java. Io. pipedinputstream;
 3   Import Java. Io. pipedoutputstream;
 4  
 5   Class Send Implements Runnable {
 6  
 7       Private Pipedoutputstream Pos; //  MPs queue output stream  
  8       Public Send (){
 9 Pos =New Pipedoutputstream ();
 10 }
 11 @ Override
 12       Public   Void Run (){
 13 String STR = "Hello world! ";
 14           Try {
 15 POs. Write (Str. getbytes ());
 16 }Catch (Ioexception e ){
 17 E. printstacktrace ();
 18 }
 19           Try {
 20 POs. Close ();
 21 } Catch (Ioexception e ){
 22 E. printstacktrace ();
 23 }
24 }
 25       Public Pipedoutputstream getpos (){
 26           Return Pos;
 27 }
 28 }
 29  
 30   Class Receive Implements Runnable {
 31  
32       Private Pipedinputstream Pis; //  Pipeline input stream  
  33       Public Receive (){
 34 Pis = New Pipedinputstream ();
 35 }
 36 @ Override
 37       Public  Void Run (){
 38           Byte [] B = New   Byte [1024];
 39           Int Len = 0;
 40           Try {
 41 Len = PIs. Read (B );
 42 } Catch (Ioexception e ){
43 E. printstacktrace ();
 44 }
 45           Try {
 46 Pis. Close ();
 47 } Catch (Ioexception e ){
 48 E. printstacktrace ();
 49 }
 50 System. Out. println (New String (B, 0, Len ));
 51 }
 52       Public Pipedinputstream getpis (){
 53           Return Pis;
 54 }
 55 }
 56  
 57   Public   Class Test23 {
58       Public   Static   Void Main (string [] ARGs ){
 59 Send = New Send ();
 60 Receive receive = New Receive ();
 61           Try {
 62 Send. getpos (). Connect (receive. getpis ()); // Connect MPs queue  
  63 } Catch (Ioexception e ){
 64 E. printstacktrace ();
 65 }
 66           New Thread (send). Start (); //  Start thread  
  67           New Thread (receive). Start ();//  Start thread  
  68 }
 69 }