reverse.java

java2应用开发指南第一版

//【代码19-1-4】
// Reverse.java
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();
    }
}