Echo Sever (Chat Server)

Server.java

import java.net.*;
import java.io.*;
public class Server {
	public static void main(String args[]) throws Exception,UnknownHostException{
		
		ServerSocket ss=new ServerSocket(8088);
		
		Socket s=ss.accept();;
		
		DataInputStream din=new DataInputStream(s.getInputStream());
		DataOutputStream dout=new DataOutputStream(s.getOutputStream());
		
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		
		String str="",str2="";
		
		while(str!="stop")
		{
			System.out.println("Waiting for client's Reply...");
			str=din.readUTF();
			System.out.println("Client: "+str);
			System.out.println("Enter Message:");
			str2=br.readLine();  
			dout.writeUTF(str2);  
			dout.flush();
		}
		
		din.close();
		s.close();
		ss.close();
	}
}