import java.io.*;import java.net.*;public class Reverse {    public static void main(String[] args) throws Exception {	if (args.length != 1) {	    System.err.println("Usage:  java Reverse string_to_reverse");	    System.exit(1);	}	String stringToReverse = URLEncoder.encode(args[0]);	URL url = new URL("http://java.sun.com/cgi-bin/backwards");	URLConnection connection = url.openConnection();	PrintStream out = new PrintStream(connection.getOutputStream());	out.println("string=" + stringToReverse);	out.close();	DataInputStream in = new DataInputStream(connection.getInputStream());	String inputLine;	while ((inputLine = in.readLine()) != null)	    System.out.println(inputLine);	in.close();    }}