Java tutorial
import java.net.InetAddress; import java.net.NetworkInterface; public class Main { public static void main(String[] argv) throws Exception { InetAddress address = InetAddress.getByName("web.mit.edu"); System.out.println("Name: " + address.getHostName()); System.out.println("Addr: " + address.getHostAddress()); System.out.println("Reach: " + address.isReachable(NetworkInterface.getByIndex(0), 0, 3000)); } }