Java tutorial
import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress; import java.net.InetSocketAddress; import java.nio.channels.DatagramChannel; public class Main { public static void main(String args[]) { try { InetAddress ia = InetAddress.getByName("www.java2s.com"); DatagramSocket ds = new DatagramSocket(8080, ia); byte buffer[] = "hello".getBytes(); DatagramPacket dp = new DatagramPacket(buffer, buffer.length, ia, 80); ds.connect(InetSocketAddress.createUnresolved("google.com", 8080)); DatagramChannel channel = ds.getChannel(); ds.send(dp); ds.close(); } catch (Exception e) { e.printStackTrace(); } } }