// Listing E: Causing I/O operations to fail

import java.net.*;

import java.io.*;

 

class Example5 extends Thread {

  volatile boolean stop = false;

  volatile ServerSocket socket;

 

  public static void main( String args[] ) throws Exception {

    Example5 thread = new Example5();

   System.out.println( "Starting thread..." );

   thread.start();

   Thread.sleep( 3000 );

   System.out.println( "Asking thread to stop..." );

   thread.stop = true;

   thread.socket.close();

   Thread.sleep( 3000 );

   System.out.println( "Stopping application..." );

   System.exit( 0 );

  }

 

  public void run() {

    try {

      socket = new ServerSocket(7856);

    } catch ( IOException e ) {

     System.out.println( "Could not create the socket..." );

      return;

    }

    while ( !stop ) {

     System.out.println( "Waiting for connection..." );

      try {

       Socket sock = socket.accept();

      } catch ( IOException e ) {

      System.out.println( "accept() failed or interrupted..." );

      }

    }

   System.out.println( "Thread exiting under request..." );

  }

}