NullPointerException trying to show an image in Processing 3.3.7

Question

I'm new to Processing and I'm studying it using the Processing Handbook. I have this example code :

PImage img;

void setUp() {
  size(200, 200);
  img = loadImage("selfportrait_small.jpg");
}

void draw() {
  background(255);
  tint(255, 102);
  image(img, 0, 0, 200, 200);
  tint(255, 102, 0, 204);
  image(img, 40, 40, 200, 200);
}

When I try to run it I get a NullPointerException in the first call to image(). As you can see in the image below, the jpg file is stored in the data folder: Processing project

Am I missing something? Is there something wrong I'm not able to see?

Thanks for help.

score 2 · Accepted Answer · answered Mar 28 '18 at 10:42

2

Yes you wrote "setUp" and not "setup" :-) Since setUp() is never called the image is never loaded.

answered Mar 28 '18 at 10:42

Alberto89

356
2
6

Oh my goodness... Thank you! That's what happens when you're too tired... :) – mauriziomercuri Mar 28 '18 at 17:50

NullPointerException trying to show an image in Processing 3.3.7

1 Answers1