How to use CreateNamedPipe in Java

Question

Hi am integrate my java application with a c++ application & i don't have control over the c++ application, already the c++ application integrated with other c++ application using pipes, Now i want to integrate with Java. But i found that java doesn't support CreateNamedPipe().
Can anyone tell me how to get this done? But am able open,read,write pipes in java but createNamedPipe() causes the problem.
Thanks in Advance
Sahe

Answer 1

Hi, I created a JNI Wrapper for WinAPI CreateNamedPipe() am able to establish connection between VC++ and Java, But am struck when am trying to sending/receiving data. When am using BufferedWriter to Send data to VC++ application by that time VC++ application says Pipe Instance is buzy cannot open!! Am enclosing my code here, if anybody come across this please help me..
import java.io.*;
import java.util.*;
class Win32 {
    public static native int CreateNamedPipe(
        String  pipeName,      
        int dwOpenMode,       
        int dwPipeMode,           
        int nMaxInstances,          
        int nOutBufferSize,
        int nInBufferSize,  
          int nDefaultTimeOut,  
        int[] secAttrs);       
class OneToOne extends Thread {
     public OneToOne() {
          start();
     public void run() {
            try{
               int size=0;
               BufferedWriter pipeWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("\\\\.\\PIPE\\\\\\.\\pipe\\MCHPPipe_OUT")));
              while(true) {
                    Thread.currentThread().sleep(500);
                    pipeWriter.write("CONNECT");
          catch (IOException e){
                e.printStackTrace();
          catch (InterruptedException e){
                 e.printStackTrace();
    public static void main(String[] args) throws IOException {
          System.out.println("Creating a Named Pipe...");
          Win32.CreateNamedPipe("\\\\.\\PIPE\\\\\\.\\pipe\\MCHPPipe_IN", //"\\\\.\\pipe\\SamplePipe",
                     0x00000003, //ACCESSMODE
                     0x00000000, //PIPEMODE
                     1,       // no instance
                     1024,    // out buff size
                     1024,    // in buff size
                     0x1D4C0,//Time out
                     null);   // secuirty
            Win32.CreateNamedPipe("\\\\.\\PIPE\\\\\\.\\pipe\\MCHPPipe_OUT",
                     0x00000003, //ACCESSMODE
                     0x00000000, //PIPEMODE
                     1,       // no instance
                     1024,    // out buff size
                     1024,    // in buff size
                     0x1D4C0,//Time out
                     null);   // secuirty
          System.out.println("PIPE IS CREATED");
          new OneToOne();
    static {
          System.loadLibrary("OneToOne");
}