Why cant I display the text of a string made with toString?

edited November 2018 in Arduino

got this from the AP-Sync library. building a string that will be sent to Ardu when enter is pressed.

Works great, great library.

However, I want to also display that string on the java, so I can see what I am typing. println, shows it fine, but "text( toArduino, LS4+190, 70);" said that I cant show that.

I also tried to make a new string just for my text such as: String BeforeSending = toArduino;
Not allowed, I get a "Type mismatch, "java.lang.StringBuilder" does not match with "java.lang.String"

Here is the function

void keyPressed(){
//println("pressed " + int(key) + " " + keyCode);
  println(toArduino );

   String BeforeSending = toArduino;

  if (keyCode == ENTER){
      println(toArduino + " sent");

        fill(y); // Yellow
   text("Sent String:", 560, 600 ); 
 // text( toString, 160+150, 600);
  if (keyCode == DELETE || keyCode == BACKSPACE){
      if(toArduino.length() > 0){
         toArduino.deleteCharAt(toArduino.length() - 1);

  if(keyCode != ENTER &&
      keyCode != DELETE &&
      keyCode != ESC &&
      keyCode != UP &&
      keyCode != DOWN &&
      keyCode != BACKSPACE &&
      keyCode != TAB &&
      keyCode != ALT &&
      keyCode != CONTROL &&
      keyCode != RETURN ){


What to do? I thought that toString will just make me another string that I can play with as I wish...



  • There is a new forum

    Please ask there

    Almost everyone is over there now

  • Please, make sure you format any code you post. It gets butchered in this forum. If you are not sure how to do that, just ask. See you in the new forum.


Sign In or Register to comment.