reverse.java

这是一个英文版的《Java程序设计与问题解决》现在好多大学都当成教材

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();
	connection.setDoOutput(true);

	PrintWriter out = new PrintWriter(
                              connection.getOutputStream());
	out.println("string=" + stringToReverse);
	out.close();

	BufferedReader in = new BufferedReader(
				new InputStreamReader(
				connection.getInputStream()));
	String inputLine;

	while ((inputLine = in.readLine()) != null)
	    System.out.println(inputLine);

	in.close();
    }
}