Client.java

import java.net.Socket;
import java.io.*;
public class Client {
    Socket socket;
    BufferedReader br;
    PrintWriter out ;
    public Client(){
        try {
            System.out.println("sending request to server");
            socket = new Socket("127.0.0.1",7777);
            System.out.println("connection done.");

            br = new BufferedReader(new InputStreamReader(socket.getInputStream()));

            out = new PrintWriter(socket.getOutputStream());

            startReading();
            startWriting();
        } catch (Exception e) {
            // TODO: handle exception
        }
    }
    public void startReading(){
        
        Runnable r1 =()->{
            System.out.println("reader started......");
            try{
            while(true){
                
               String msg =br.readLine();
               if (msg.equals("stop")){
                System.out.println("server terminated the chat ");
                socket.close();
                break;

               }
               System.out.println("server :"+ msg);
            
            }
        }catch(Exception e){
            //e.printStackTrace();
            System.out.println("connection closed");
        }

        };
        new Thread(r1).start();
    }
    
    public void startWriting(){
        Runnable r2 =()->{
            System.out.println("writer started......");
            try{
        while(!socket.isClosed()){
            
                BufferedReader br1 = new BufferedReader( new InputStreamReader(System.in)); 
                String content = br1.readLine();
                out.println(content);
                out.flush();
                if(content.equals("stop")){
                    socket.close();
                    break;
                }
            
        }
        System.out.println("connection closed");

    }catch(Exception e){
        e.printStackTrace();
       
    }
    
        };
        new Thread(r2).start();
            }
    public static void main(String[] args) {
        System.out.println("this is client......");
        new Client();
    }
    
}