Java tutorial
import java.net.InetAddress; import java.net.UnknownHostException; public class GetIP { public static void main(String[] args) { InetAddress address = null; try { address = InetAddress.getByName("www.java2s.com"); } catch (UnknownHostException e) { System.exit(2); } System.out.println(address.getHostName() + "=" + address.getHostAddress()); System.exit(0); } }