This code doesn't run

Question

This code doesn't pass run time. Can you please help me.
* Copyright (c) 2004 David Flanagan.  All rights reserved.
* This code is from the book Java Examples in a Nutshell, 3nd Edition.
* It is provided AS-IS, WITHOUT ANY WARRANTY either expressed or implied.
* You may study, use, and modify it for any non-commercial purpose,
* including teaching and use in open-source projects.
* You may distribute it non-commercially as long as you retain this notice.
* For a commercial use license, or to purchase the book,
* please visit http://www.davidflanagan.com/javaexamples3.
import java.io.*;
import java.net.*;
import java.util.*;
import java.lang.*;
* This program is a very simple Web server.  When it receives a HTTP request
* it sends the request back as the reply.  This can be of interest when
* you want to see just what a Web client is requesting, or what data is
* being sent when a form is submitted, for example.
public class HttpMirror {
    public static void main(String args[]) {
        try {
            // Get the port to listen on
            int port = Integer.parseInt(args[0]);
            // Create a ServerSocket to listen on that port.
            ServerSocket ss = new ServerSocket(port);
            // Now enter an infinite loop, waiting for & handling connections.
            for(;;) {
                // Wait for a client to connect.  The method will block;
          // when it returns the socket will be connected to the client
                Socket client = ss.accept();
                // Get input and output streams to talk to the client
                BufferedReader in = new BufferedReader(
                      new InputStreamReader(client.getInputStream()));
                PrintWriter out = new PrintWriter(client.getOutputStream());
                // Start sending our reply, using the HTTP 1.1 protocol
                out.print("HTTP/1.1 200 \r\n");        // Version & status code
                out.print("Content-Type: text/plain\r\n"); // The type of data
          out.print("Connection: close\r\n");        // Will close stream
                out.print("\r\n");                         // End of headers
                // Now, read the HTTP request from the client, and send it
                // right back to the client as part of the body of our
                // response.  The client doesn't disconnect, so we never get
                // an EOF.  It does sends an empty line at the end of the
                // headers, though.  So when we see the empty line, we stop
                // reading.  This means we don't mirror the contents of POST
                // requests, for example.  Note that the readLine() method
          // works with Unix, Windows, and Mac line terminators.
                String line;
                while((line = in.readLine()) != null) {
                    if (line.length() == 0) break;
                    out.print(line + "\r\n");
                // Close socket, breaking the connection to the client, and
          // closing the input and output streams
          out.close();     // Flush and close the output stream
          in.close();      // Close the input stream
                client.close();  // Close the socket itself
            } // Now loop again, waiting for the next connection
        // If anything goes wrong, print an error message
        catch (Exception e) {
            System.err.println(e);
            System.err.println("Usage: java HttpMirror <port>");
   * Copyright (c) 2004 David Flanagan.  All rights reserved.
   * This code is from the book Java Examples in a Nutshell, 3nd Edition.
   * It is provided AS-IS, WITHOUT ANY WARRANTY either expressed or implied.
   * You may study, use, and modify it for any non-commercial purpose,
   * including teaching and use in open-source projects.
   * You may distribute it non-commercially as long as you retain this notice.
   * For a commercial use license, or to purchase the book,
   * please visit http://www.davidflanagan.com/javaexamples3.
  class MulthServ extends Thread
  Socket s;
  BufferedReader i;
PrintWriter o;
  public MulthServ(Socket s) throws Exception
  this.s = s;
  this.i = new BufferedReader(new
  InputStreamReader(s.getInputStream()));
  this.o = new PrintWriter(s.getOutputStream(), true);
  public void run()
  try {
  o.close();
  i.close();
  s.close();
  catch(Exception e) {}
}

Answer 1

just compiled and ran it on my machine. runs fine, just as the comments say it should.
i ran it using this java command:
F:\Software\Java\Forum>java HttpMirror 9999which starts the server listening for http requests on port 9999.
i entered this url into my browser:
http://localhost:9999/?first=foo&last=bari got this response back in my browser, just as the comments said i would:
GET /?first=foo&last=bar HTTP/1.1
Host: localhost:9999
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alivewhat does "not running" look like to you? maybe you don't know what http is all about.
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