Thread: client server program on a single machine

i hv done a program on a server client program on my own machine...i m posting the code..what i want to do is what i type in client site will be seen on the server site too..pls help me...

Client...

import java.io.*;
import java.net.*;
 
public class Client {
 
	public static void main(String args[]) throws Exception	{
	 	Socket cs = new Socket("localhost",6666);
		int flag=1;
	 	DataInputStream dis = new DataInputStream(System.in);
		System.out.println("Client:");
		ObjectOutputStream oos=new ObjectOutputStream(cs.getOutputStream());
		while(flag==1)
               {
	 	//String str = dis.readLine();
	 	//System.out.println(str);
	 	oos.writeObject(dis.readLine());
	 	if((str=="bye")||(str=="BYE"))
			flag=0;
		}
		oos.close();
		dis.close();
	 cs.close();
	}
}

Server...

import java.io.*;
import java.net.*;
 
 
class Server
	{
	public static void main(String args[]) throws Exception
         {
		ServerSocket ss=new ServerSocket(6666);
		Socket ss1=ss.accept();
		boolean flag=true;
		DataInputStream dis=new DataInputStream(ss1.getInputStream());
		System.out.println("connection established......");
		System.out.println("server:");
		ObjectOutputStream ps=new ObjectOutputStream(ss1.getOutputStream());
		while(flag==true){
 
			String str=dis.readLine();
			System.out.println(str);
			if((str=="bye")||(str=="BYE"))
				flag=false;
				}
		System.out.println("connection closed....");
		ps.close();
		ss1.close();
		ss.close();
 
			}
		}

i m unable to produce the desired result..

I think the easiest way to get data from point A to point B trough socket is using DataInputStream and DataOutputStream

DataInputStream (Java 2 Platform SE v1.4.2)
DataOutputStream (Java 2 Platform SE v1.4.2)