My server

/**
 * My server
 * Date : 28.07.19
 */
package Socket;

import java.net.*;
import java.io.*;
public class MyServer {
    public static void main(String[] args)throws Exception{
        ServerSocket ss = new ServerSocket(3333);
        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.equals("stop")){
            str = din.readUTF();
            System.out.println("client says: " + str);
            str2 = br.readLine();
            dout.writeUTF(str2);
            dout.flush();
        }

        din.close();
        s.close();
        ss.close();
    }
}