CLIENT.java

//import java.net.*;
import java.io.BufferedReader;
import java.io.PrintWriter;
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 strated...");

          try{ 

          while(true){
            
            String msg=br.readLine();
            if(msg.equals("exit")){
                System.out.println("Server  terminated the chat");

                socket.close();

                break;
            }
            System.out.println("Server: "+msg);
        
          }
        }catch(Exception e){
           // e.printStackTrace();
           System.out.println("connection is closed..");
        }
        };
        new Thread(r1).start();

    }
    public void startWriting(){

        Runnable r2=()->{
            System.out.println("write started...");

            try {
            while(true && !socket.isClosed()){
                
                    BufferedReader br1 = new BufferedReader(new InputStreamReader(System.in));
                    String content = br1.readLine();
                    out.println(content);
                    out.flush();

                    if(content.equals("exit")){
                        socket.close();
                        break;
                    }
                
            }
            System.out.println("connection is closed..");

        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();

        }
        };
        new Thread(r2).start();
    }
    public static void main(String[] args) {
        System.out.println(" This is Client");
        new Client();
    }
}