/** * A simple program demonstrating DNS lookup * * Usage: *	java DNSLookUp <IP Name> * */import java.io.*;import java.net.*;public class DNSLookUp{	public static void main(String[] args) {		if (args.length != 1) {			System.err.println("Usage: java DNSLookUp <IP name>");			System.exit(0);		}		InetAddress hostAddress;		try {			hostAddress = InetAddress.getByName(args[0]);			System.out.println(hostAddress.getHostAddress());		}		catch (UnknownHostException uhe) {			System.err.println("Unknown host: " + args[0]);		}	}}