Help with chat client program

[srivigneshwar]

Hi I unable to find the cause of this note when i compile

Note: ChatClient.java uses or overrides a deprecated API
Note: Recompile with -deprecation for details

When I try to run the program i gt the following error

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException at ChatClient .main <ChatClient.java: 76>

Here is the program,

import java.net.*;
import java.io.*;
import java.util.*;
import java.awt.*;
class ChatClient extends Frame implements Runnable
{
	Socket soc;
	TextField tf;
	TextArea ta;
	Button btnSend,btnClose;
	String sendTo;
	String LoginName;
	Thread t=null;
	DataOutputStream dout;
	DataInputStream din;

	ChatClient(String LoginName,String chatwith) throws Exception
	{
		super(LoginName);
		this.LoginName=LoginName;
		sendTo=chatwith;
		tf=new TextField(50);
		ta=new TextArea(50,50);
		btnSend= new Button("Send");
		btnClose = new Button("Close");
		soc=new Socket("127.0.0.1",5217);

		din=new DataInputStream(soc.getInputStream());
		dout=new DataOutputStream(soc.getOutputStream());
		dout.writeUTF(LoginName);
		
		t=new Thread(this);
		t.start();
	}
	void setup()
	{
		setSize(600,400);
		setLayout(new GridLayout(2,1));
		add(ta);
		Panel p=new Panel();
        p.add(tf);
		p.add(btnSend);
		p.add(btnClose);
		add(p);
		show();
	}

	public boolean action(Event e, Object o)
	{
		if(e.arg.equals("Send"))
		{
			try
			{
				dout.writeUTF(sendTo+" 

"+tf.getText().toString());
				

ta.append("\n"+LoginName+"Says:"+tf.getText().toString());
				tf.setText("");
			 }
			catch(Exception ex)
			     {}
		  }
			else if(e.arg.equals("Close"))
			{
				try
				{
					

dout.writeUTF(LoginName+"LOGOUT");
					System.exit(1);
				}
				catch (Exception ex)
				   {}
			}
			return super.action(e,o);
		}

    public static void main(String args[]) throws Exception 
	{
		ChatClient Client1=new ChatClient( args[0],args[1]);
                                
		Client1.setup();
	}
   public void run()
		{
	     while(true)
			{
			 try
			 {
				ta.append("\n"+sendTo+"Says:"+din.readUTF());
			 }
			 catch (Exception ex)
			 {
				 ex.printStackTrace();
			 }
			}
		}
	}

Please help me with this..
Thanks in advance!

[emceenugget]

your two problems are unrelated.

1. deprecation warning: compile with the -deprecation flag so you know what is obsolete and find out what you should replace it with.
2. array index out of bounds exception: something in your main method is accessing a bad index in an array. i suspect it is due to you not passing in adequate arguments when running the program (which you should check for before doing anything else anyways).