web server

Hi
I built a web server which outputs HTML.
Now when i run it and call for the HTML on Internet Explorer the HTML is viewed, but when i call on Firefox no HTML is outputted...
why is that???

here is the source code:
package myservertrial1;

package myservertrial1;
 
/**
 *
 * @author marie-jose
 */
import java.net.*;
import java.io.*;
import Proxy.Proxy;
 
public class Main {
 
    /**
     * @param args the command line arguments
     */
    static ServerSocket MainSocket = null;
    final static int defaultPort = 8080;
    final static int maxPort = 65536;
 
    public static void main(String[] args) {
        // TODO code application logic here
        int daemonPort;
 
        // Parse command line
        switch (args.length) {
            case 0:
                daemonPort = defaultPort;
                break;
 
            case 1:
                try {
                    daemonPort = Integer.parseInt(args[0]);
                } catch (NumberFormatException e) {
                    System.out.println("Error: Invalid daemon port");
                    return;
                }
                if (daemonPort > maxPort) {
                    System.out.println("Error: Invalid daemon port");
                    return;
                }
                break;
 
            default:
                System.out.println("Usage: Proxy [daemon port]");
                return;
        }
 
        try {
            //If i wanted to see what host the proxy is on i do the following
            String setLocalHost = InetAddress.getLocalHost().getHostName();
            String tmp = InetAddress.getLocalHost().toString();
            String setProxyMachineNameandPort = setLocalHost + ":" + daemonPort;
 
            // Create main socket
            System.out.println("Creating Main Socket...");
            MainSocket = new ServerSocket(daemonPort);
 
            Socket ClientSocket = MainSocket.accept();
            System.out.println("Client socket accepted");
 
            //Creating client socket input, to read what the
            //client wants
            BufferedReader in = new BufferedReader(new InputStreamReader(
                    ClientSocket.getInputStream()));
            String str = ".";
            while (!str.equals("")) {
                str = in.readLine();
            }
            System.out.println("read input");
 
            //preparing output stream to send back to client
            OutputStream out = ClientSocket.getOutputStream();
            PrintWriter trial = new PrintWriter(out);
            String docType = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " + "Transitional//EN\">\n";
            //reply headers
            trial.println("HTTP/1.0 200 OK");
            trial.println("Content-Type: text/html");
            trial.println("Server: Bot");
            //HTML page
            trial.println("docType");
            trial.println("<html>");
            trial.println("<head>");
            trial.println("<title> hello </title>");
            trial.println("<H1>Welcome to the Ultra Mini-WebServer</H2>");
            trial.println("</head>");
            trial.println("</html>");
            trial.flush();
            System.out.println("output sent");
            
            // Pass request to new proxy thread
            Proxy thd = new Proxy(ClientSocket);
            System.out.println("sending client to proxy");
            thd.start();
            ClientSocket.close();
            
 
        } catch (Exception e) {
        } finally {
            try {
                MainSocket.close();
            } catch (Exception exc) {
            }
        }
    }
}

If you install Live HTTP Headers into your Firefox you will see the headers attached to your response. I don't think you meant to write this header:

Look very closely at the structure of an HTTP response. You are very close.

thank you for both your help.
yes there was no need for placing doctype and i also had to arrange the reply header

thanks again

IN particular, the issue was that you didn't have a blank line after the headers, right?

Sorry for the late reply
This is the modified reply header