public class Nio2CompletionHandlerEchoServer { public static void main(String[] args) throws IOException { AsynchronousServerSocketChannel serverSocketChannel = AsynchronousServerSocketChannel.open(); serverSocketChannel.bind(new InetSocketAddress(7000)); AcceptCompletionHandler acceptCompletionHandler = new AcceptCompletionHandler(serverSocketChannel); serverSocketChannel.accept(null, acceptCompletionHandler); System.in.read(); } }