Client.java

import java.io.*;
import java.net.*;
import java.util.Scanner;


public class Client{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        try {
            Socket s = new Socket("localhost", 6969);
            DataInputStream in = new DataInputStream(s.getInputStream());
            DataOutputStream out = new DataOutputStream(s.getOutputStream());
            String fromserver;
            String mode;
            String fromuser;

            while (true) {
                mode = in.readUTF();
                if (mode.equals("break")) break;

                fromserver = in.readUTF();
                if (!fromserver.isEmpty())
                    System.out.println(fromserver);

                if (mode.equals("write")) {
                    fromuser = sc.nextLine();
                    out.writeUTF(fromuser);
                }

                if (mode.equals("read")) {
                }


            sc.close();
            s.close();
        }
        }catch (ConnectException connectException){
            System.out.println("Erro ao conectar ao servidor");
        }catch (SocketException socketException){
            System.out.println("Ouve um erro no servidor, o servidor provavelmente caiu");

        }catch (Exception e){
            System.out.println("Ouve um erro desconhecido");
        }

    }
}