[App] - TCPServidor.java

//TCP - Servidor.java, Willian Luigi (c) CODE.ME
//Tutorial de conexão TCP: http://codeme.forumeiros.com/t40-conexao-tcpservidor-cliente#245

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

class Servidor {
    public static void main(String[] args) throws Exception {
        Scanner bufferUs;
        ServerSocket entry = new ServerSocket(7777);
        String msg, resposta;
        while(true) {
            Socket conn_sock = entry.accept();
            bufferUs = new Scanner(conn_sock.getInputStream());
            DataOutputStream outToClient = new DataOutputStream(conn_sock.getOutputStream());
            msg = bufferUs.nextLine();
            System.out.printf(msg + '\n');
            resposta = msg.toUpperCase() + '\n';
            outToClient.writeBytes(resposta);
        }
    }
}