how to write data to socket channel

is there any small working program for recieving from and sending data to client using java nio.

Actually i am unable to write to socket channel but i am able to read the incoming data how to write data to socket channel

Thanks Deepak

From stackoverflow

• You can write data to a socket channel like so:

  import java.nio.*;
  import java.nio.channels.*;
  import java.nio.charset.*;
  
  public class SocketWrite {
  
    public static void main(String[] args) throws Exception{
  
      // create encoder
      CharsetEncoder enc = Charset.forName("US-ASCII").newEncoder();  
  
      // create socket channel
      ServerSocketChannel srv = ServerSocketChannel.open();
  
      // bind channel to port 9001   
      srv.socket().bind(new java.net.InetSocketAddress(9001));
  
      // make connection
      SocketChannel client = srv.accept(); 
  
      // UNIX line endings
      String response = "Hello!\n";
  
      // write encoded data to SocketChannel
      client.write(enc.encode(CharBuffer.wrap(response)));
  
      // close connection
      client.close();
    }
  }
  

  The InetSocketAddress may vary depending on what you're connecting to.

  Deepak : Thanks John, Thanks for your support yhis is one of the excellent program. My mistake was I didi not use "\n" at the end of my string...

  John T : Be careful, it is platform dependent.

  Deepak : Hi John Can u mention on which platform socket channel does not work.

  John T : By platform dependent I was referring to the newline "\n". If you would like a platform independent solution you can use System.getProperty("line.separator")

  Deepak : Hi John how to know whether the client is disconnected before writing to the socket channel