Re: pass-by-reference(of StringBuffer) to a constructor of another class

i am very sorry to present my question that doesn't convey correct
meaning...

this file acts as server...

import java.io.*;
import java.net.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class Message implements Serializable
{
    String mesg;
}
class server1 extends JFrame implements ActionListener,Runnable
{
    JPanel p;
    JTextArea ta;
    JScrollPane sp;
    JLabel l;
    JTextField txt;
    JButton b;
    Socket cl;
    String str;
    ServerSocket sc;
    Thread th;
    Socket s;
    //public String temp;

    protected ObjectInputStream client;
    protected ObjectOutputStream cli;

    server1()
    {
        super("Client Window");
        th=new Thread(this);
        p=new JPanel();
        //temp=new Message();
        ta=new JTextArea(10,20);
        sp=new JScrollPane(ta);
        l=new JLabel("Enter Message ");
        txt=new JTextField(15);
        b=new JButton("Submit");
        try
        {
            sc=new ServerSocket(1001);
        }
        catch (Exception e)
        {
             //JOptionPane.showMessageDialog(null,"Socket Error");
        }
        p.add(sp);
        p.add(l);
        p.add(txt);
        p.add(b);
        getContentPane().add(p);
        setSize(300,300);
        setVisible(true);
        b.addActionListener(this);
        th.start();
    }
    public void actionPerformed(ActionEvent ae)
    {
        try
        {
            str=txt.getText();
            txt.setText("");
            Message m1=new Message();
            m1.mesg=str;
            if (str.equals("")==false)
            {
                cli=new ObjectOutputStream(s.getOutputStream());
                cli.writeObject((Message)m1);
                ta.append("\nServer : "+str);
            }
        }
        catch (Exception e)
        {
             JOptionPane.showMessageDialog(null,""+e);
        }
    }
    public void run()
    {
        while (true)
        {
            try
            {
                s=sc.accept();
                Message temp=new Message();
                connection cn=new connection(s,temp);
                if(temp.mesg.equals("")==false)
                    ta.append("\nClient : "+temp.mesg);
                //JOptionPane.showMessageDialog(null,""+temp);
            }
            catch (Exception e)
            {
            }
            /*try
            {
                Thread.sleep(500);
            }
            catch (Exception e)
            {
            }*/
        }
    }
    public static void main(String args[])
    {
        new server1();
    }
}
class connection extends Thread
{
    protected Socket cs;
    protected ObjectInputStream client;
    protected ObjectOutputStream cli;
    protected PrintStream ps;
    String mm,abc;
    public connection(Socket sr,Message toser)
    {
        cs=sr;
        try
        {
            client=new ObjectInputStream(cs.getInputStream());
            //cli=new ObjectOutputStream(cs.getOutputStream());
        }
        catch (Exception e1)
        {
            try
            {
                cs.close();
            }
            catch (Exception e2)
            {
            }
        }
        this.start();
        //toser.mesg=mm;
        //abc=new String(""+mm.toString());

// the main probem is here....
// the value of mm is not assigned to toser.mesg--> please suggest
me a solution
//

        toser.mesg=new String(mm);
        JOptionPane.showMessageDialog(null,""+toser.mesg);
        JOptionPane.showMessageDialog(null,""+abc);
    }
    public void run()
    {
        Message msg1;
        try
        {
            for(;;)
            {
                msg1=(Message)client.readObject();
                if(msg1==null)
                    break;
                mm=msg1.mesg;
                //mm="chanti gadu";
                System.out.println("Client Message : "+mm);
            }
        }
        catch (Exception e3)
        {
        }
        finally
        {
            try
            {
                cs.close();
            }
            catch (Exception e4)
            {
            }
        }
    }
}