Calling output.close() automatically upon exit

lotlotlotlotlot

Halli hallo,

I am having a bit of trouble with this piece of code.

    PrintWriter output;
    int savedTime;
    int totalTime = 1000;

    void setup() {

      output = createWriter("positions.txt");     // Create a new file in the sketch directory
      savedTime = millis();
    }

    void draw() {
      point(mouseX, mouseY);
      timer();
    }

    void timer()
    {
      int passedTime = millis() - savedTime;
      // Has five seconds passed?
      if (passedTime > totalTime) {
        println( "data write~!" );
        output.println(mouseX);
        savedTime = millis();                     // Save the current time to restart the timer!

      }
    }  

    void keyPressed() {
      output.flush();  // Writes the remaining data to the file
      output.close();  // Finishes the file
      exit();  // Stops the program
    }

The program basically takes the values of mouse X at certain time intervals. It then writes it in a .txt file in the directory UPON keyPressed() !!

My problem is, is that if the User exits the program via [ X ], the values are not saved. Is there anyway to go around this? I think there must be something very basic behind the solution but cannot wrap my head around it. Thank you for your time.

SilentAce

You can use stop() or exit(). See which one works for you.

void stop() {
  output.flush();
  output.close();
  super.stop();
}

void exit() {
  output.flush();
  output.close();
  super.exit();
}

GoToLoop

I guess exit() is more guaranteed! And probably, flush() is redundant when using close()! :-?

P.S.: By guaranteed I've meant: to work than the stop() version! ^#(^

lotlotlotlotlot

Thanks for the feedback. I will define my own methods instead of using the predefined ones.

Another question though. Is it possible to "save" although the User clicks close [ X ]? When when trying out, I found that pressing Close does not "save" the document.

EDIT: is that what the super.exit(); does?

EDIT 2: Thanks a lot guys. Indeed it was super.exit(); that saved the day. After implementing SilentAce's code the program automatically saves on exit.