What is wrong with this code?

int numFrames = 8;
int frame = 0;
PImage[] images = new PImage[numFrames];

void setup(){
  size(360,144);
  frameRate(30);
  images[0] = loadImage("1.png");
}
void draw(){
  frame++;
  if (frame == numFrames){
    frame = 0;
  }
  image(images[frame],0,0);
}