Using Pictures in Arrays

Processing Beginners
2 
// ...

void setup() {
  // ...

  noLoop();
  imageMode(CENTER);
}

void draw() {
  // ...

  image(haut[hautzaehler], width >> 1, height >> 0);
}

void mousePressed() {
  hautzaehler = (hautzaehler + 1) % haut.length;
  redraw();
}