How to find the solution (transitions)

VTT85

I've download and modify this program, I have a problem when I run this sketch, Processing says to me "impossible to / by zero" but I've charged a list. why the list as zero ?

This is my code :

import com.bric.image.transition.Transition;
import com.bric.image.transition.ScribbleTransition2D; 
import java.awt.Graphics2D; 
import java.awt.image.BufferedImage;

Transition t; 
ArrayList<String> images = new ArrayList<String>(); // list of images to load 
PImage[] img; 
int currentImage = 0; 
int nextImage; 
BufferedImage[] buf; 
BufferedImage out; 
Graphics2D g2; 
int frames = 100; // number of frames per transition 

void setup(String path) { 
  File folder = new File(path); 
  File[] listOfFiles = folder.listFiles();

  for (File file : listOfFiles) { 
    if (file.isFile() && (file.getName().contains(".jpg") || file.getName().contains(".png"))) { 
      images.add(file.getName()); 
    } 
  } 

  size(600, 300); 
  // create pimage array 
  img = new PImage[images.size()]; 
  // create buffered image array 
  buf = new BufferedImage[images.size()]; 
    for (int h = 0 ; h < images.size() ; h++) { 
      img[h] = loadImage(images.get(h)); 
      buf[h] = (BufferedImage)img[h].getNative(); 
    } 
  t = new ScribbleTransition2D(true); 
  // all the images should be the same size 
  out = new BufferedImage(img[0].width, img[0].height, BufferedImage.TYPE_INT_ARGB); 
  g2 = out.createGraphics(); 
} 

void draw() { 

    if ((frameCount % frames) == 0) { 
    // bump images 
    currentImage = nextImage; 
    }
  nextImage = (currentImage + 1) % images.size();
  // draw transition into graphic 
  t.paint(g2, buf[currentImage], buf[nextImage], (frameCount % frames) / (float)frames);
  // copy graphic to screen 
  image(new PImage(out), 0, 0); 
}

Please I want help ! :)

koogs

add println(path);

koogs

and println(file); inside the loop on line 20

VTT85

I've add println (file) into the loop, but is not functional too :(

VTT85

I'm french I'm sorry for the mistakes...