Java tutorial
import java.net.InetAddress; import java.net.Socket; public class WebPing { public static void main(String[] args) { try { InetAddress addr; Socket sock = new Socket("www.java2s.com", 80); addr = sock.getInetAddress(); System.out.println("Connected to " + addr); sock.close(); } catch (java.io.IOException e) { System.out.println("Can't connect to " + args[0]); System.out.println(e); } } }