Java AsynchronousServerSocketChannel create server

import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.AsynchronousServerSocketChannel;
import java.nio.channels.AsynchronousSocketChannel;
import java.nio.channels.CompletionHandler;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;

public class Main {

   public static void main(String[] args) {
      try {//from  w ww.jav a  2 s . c  o  m
         final AsynchronousServerSocketChannel listener = AsynchronousServerSocketChannel.open();
         InetSocketAddress address = new InetSocketAddress("localhost", 5000);
         listener.bind(address);

         listener.accept(null, new CompletionHandler<AsynchronousSocketChannel, Void>() {

            public void completed(AsynchronousSocketChannel channel, Void attribute) {
               try {
                  System.out.println("Server: completed method executing");
                  while (true) {
                     ByteBuffer buffer = ByteBuffer.allocate(32);
                     Future<Integer> readFuture = channel.read(buffer);
                     Integer number = readFuture.get();
                     System.out.println(number);
                     System.out.println("Server: Message received: " + new String(buffer.array()));
                  }
               } catch (InterruptedException | ExecutionException ex) {
                  ex.printStackTrace();
               }
            }

            public void failed(Throwable ex, Void atttribute) {
               System.out.println("Server: CompletionHandler exception");
               ex.printStackTrace();
            }
         });
         while (true) {
            // wait
         }

      } catch (IOException ex) {

         ex.printStackTrace();
      }
   }
}