chatcl~1.jav

its a chat server code using javascript

package chat;

import org.omg.CORBA.*;
import org.omg.CosNaming.*;
import java.awt.*;
import java.awt.event.*;


class chatclient 
{
	public static ORB orb;
    private chatserver myserver;

	public static void main(String[] args) 
	{
      try
	  {
      orb = ORB.init(args,null);
      chatclient c = new chatclient();
      c.connect();
       new loginframe("Give the user name here",c.myserver);
	  }
	  catch(Exception e)
	  {
	   System.out.println("Eroor occured : "+e);
      } 
	}

	public void connect()
   {
     try
    {
     org.omg.CORBA.Object obj = orb.resolve_initial_references("NameService");
	 NamingContext nc = NamingContextHelper.narrow(obj);
	 NameComponent ncmp = new NameComponent("ChatServer"," ");
	 NameComponent path[] = { ncmp };

	 myserver = chatserverHelper.narrow(nc.resolve(path));
    }
     catch(Exception e)
    {
     System.out.println("Error connection :"+e);
	 myserver = null;
	 return ;
    }
     System.out.println("Bound to server");
   }


}



class loginframe extends Frame
{
 chatserver  srv;
 
 TextField t= null;
 Button b= null;

 public  loginframe(String s,chatserver sv)
  {
   super(s);
   srv = sv;
   setBounds(50,50,450,150);
   setLayout(null);
   setBackground(new Color(170,90,190));
   Label l = new Label("User Id :");
   l.setBounds(25,25,100,35);
   t = new TextField(15);
   t.setBounds(120,25,260,35);
   b = new Button("Enter");
   b.setBounds(150,70,160,85);
   b.addActionListener(new al());
   t.addActionListener(new al());
   add(l);
   add(t);
   add(b);
   addWindowListener(new wl());
   setVisible(true);
  }

  class wl extends WindowAdapter
  {
   public void windowClosing(WindowEvent we)
   {
    Window w = (Window)(we.getSource());
	w.setVisible(false);
	w.dispose();
	System.exit(1);
   }
  };

  class al implements ActionListener
  {
   public void actionPerformed(ActionEvent ae)
   {
     java.lang.Object obj = ae.getSource();
	 String str = t.getText();
	 str = str.trim();
	 if(str.equals("")||str.length()>15)
	 return;
	 if(srv.login(str))
	 {
	 setVisible(false);
	 dispose();
	 new chatframe(str,srv);
	 }
	 else
	 System.out.println("Error occured : Either the user already exists or the room is full");
   }	
  };

}
  class chatframe extends Frame 
  {
   chatserver srv;
   TextField tf=null;
   TextArea ta=null;
   Button send=null;
   int x=20,y=20;
   Dimension d=null;
   String uname=null;
   int current=0;;
   public chatframe(String str,chatserver sr)
   {
    super(str);
	uname=str;
	srv = sr;
	
    setLayout(new BorderLayout());
	ta =new TextArea(20,30);
	
	add(ta,BorderLayout.CENTER);
	tf = new TextField(20);
	
	send = new Button("Send");
	Panel p = new Panel();
	p.setLayout(new GridLayout());
    p.add(tf);
	tf.addActionListener(new al());
    send.addActionListener(new al());
	p.add(send);
	add(p,BorderLayout.SOUTH);
	addWindowListener(new wl());
	setVisible(true);
   }	 

   class wl extends WindowAdapter
  {
   public void windowClosing(WindowEvent we)
   {
    Window w = (Window)(we.getSource());
	w.setVisible(false);
	srv.logout(uname);
	w.dispose();
	System.exit(1);
   }
  };

   class al implements ActionListener
   {
    public void actionPerformed(ActionEvent ae)
	{
     java.lang.Object obj = ae.getSource();
	 String str = tf.getText();
	 str = str.trim();
	 if(str.equals(""))
	 return;
	 str = uname+" : "+str;
	 tf.setText("");
	 ta.append("\n"+str);
	 srv.addmessage(str);
	 String msg;
	 while(true)
     {
     msg =  srv.getnewmesg(current);
     if(msg.equals(" "))
	 return;
	 if(msg.startsWith(uname))
	 current++;
	 else
	 {
	 ta.append("\n"+msg);
	 current++;
	 }
	 } 
 	}
   };




  };