Problem getting japplet static field

Question

Hi,
i have a japplet where i have a static jlist field.
i'm trying to implement chat using sockets.
i have thread class. in this class, i want the selected index of jlist used in japplet.
the basic logic is....i run the server, i open 3 instances of japplet. the list will populate with number of clients connected....in this case...3. i select particular value from list and i retrive particular socket object out of a vector (used to store socket object) using this index.
so the problem is when i do ClietApplet.list.getSelectedIndex()...it gives -1
can anyone pls suggest me what would be the problem or what would be other way round ?

Answer 1

here is server and server thread
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.border.*;
import java.net.*;
import java.io.*;
import java.util.*;
public class NewServer
     public ServerSocket serverSocket = null;
     BufferedReader input;
     String txt = "";
     static int list_val = 0;
     OutputStreamWriter outputstream = null;
     public NewServer()
          super();
          System.out.println("     in constructor ");
          startSocketWait();
     public void startSocketWait()
          try
               serverSocket = new ServerSocket(5090);
               while (true)
                    Socket client = serverSocket.accept ();
                    System.out.println ("Accepted from " + client.getInetAddress ());
                    list_val = list_val + 1;
                    System.out.println("list_val is "+ list_val);
                    ServerThread st = new ServerThread(client);
                    st.start();
          catch ( java.io.InterruptedIOException e )
               System.out.println("InterruptedIOException Occured");
               e.printStackTrace();
          catch(Exception e)
          System.out.println("error " + e);
     public static void main(String args[])
          NewServer server = new NewServer();
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.util.Vector;
import java.io.*;
import java.util.*;
class ServerThread extends Thread {
     protected Socket client;
     protected static int key;
     OutputStreamWriter outputstream = null;
          BufferedReader br;
          static String[] message_split;
     ServerThread(Socket client) {
     this.client = client;
     try
          outputstream = new OutputStreamWriter(client.getOutputStream());
          br = new BufferedReader(new InputStreamReader(client.getInputStream()));
     catch(Exception e5)
     //protected static HashMap map = new HashMap();
     protected static Vector handlers = new Vector ();
     public void run() {
     try
          handlers.addElement (this);
          //map.put(key,this);
               while (true)
                    String msg = br.readLine() + "\n";
                    broadcast (msg);
     catch (Exception e)
          e.printStackTrace();
     finally
          handlers.removeElement(this);
          try
          client.close();
          catch (Exception e2)
          System.out.println("Oh no! " +
          e2.toString());
     protected static void broadcast (String message)
     synchronized (handlers)
               Enumeration e = handlers.elements ();
               //while (e.hasMoreElements ())
               //ServerThread st = (ServerThread) e.nextElement ();
                    ServerThread st = (ServerThread) handlers.get(AppletClient.list.getSelectedIndex());
                    try
                         System.out.println("in try");
                         synchronized (st.outputstream)
                              System.out.println("in outputstream");
                              st.outputstream.write("Client : " + message);
                         st.outputstream.flush ();
                    catch (IOException ex)
     }// method broadcast ends
}// ServerThread ends
pls run the server...NewServer.java and open 3 or 4 instances of AppletClient....whenever the client selects any particular index from list...the message should go to that client
thanks in advance