void keyTyped() {

   if(escolha==0){
     if(keyPressed && key=='1'){
     escolha=1;
     }

     if(keyPressed && key=='2'){
     escolha=2;
     }

   }

  if(escolha==1){

    if(keyPressed && key=='\n' && flagkey==0) {send("registar " + username + " " + password + "\n");println(username);println(password);}

    else if(keyPressed && key=='\n' && flagkey==1) {
      flagkey=0;
    }

    else if(keyPressed && key==BACKSPACE && flagkey==1){
      if(username.length()>0){
      username = username.substring(0, username.length() - 1);}
      }

    else if(keyPressed && key!='1' && flagkey==1){
        username+=key;
    }

    else if(keyPressed && key==BACKSPACE && flagkey==0){
      if(password.length()>0){
      password = password.substring(0, password.length() - 1);
      passaux = passaux.substring(0, passaux.length() - 1);}
      }

    else if(keyPressed && flagkey==0){
       password+=key;
       passaux+='*';
    }

  }

  if(escolha==2){


    if(keyPressed && key=='\n' && flagkey2==0) {send("login " + username2 + " " + password2 + "\n");}

    else if(keyPressed && key=='\n' && flagkey2==1) {
    flagkey2=0;
    }

    else if(keyPressed && key==BACKSPACE && flagkey2==1){
      if(username2.length()>0){
      username2 = username2.substring(0, username2.length() - 1);}
      }

    else if(keyPressed && key!='2' && flagkey2==1){
        username2+=key;
    }

    else if(keyPressed && key==BACKSPACE && flagkey==2){
      if(password2.length()>0){
      password2 = password2.substring(0, password2.length() - 1);
      passaux2 = passaux2.substring(0, passaux2.length() - 1);}
      }

    else if(keyPressed && flagkey2==0){
       password2+=key;
       passaux2+='*';
    }

  }