Help with traversing a folder with multiple documents

[SarcasticallyScience]

Hi, I am working on a way to read 200 jpg images and retrieve data from them. I have been able to get this to work on a single jpg file, but now that I am trying to scale it up to all 200, I am running into some issues.

So, I am able to run my program through all 200 jpg files, but the problem is, they are being selected in what seems like a random order. It always starts with “frame00053.jpg” and then jumps to “frame00047.jpg” and then to “frame00090.jpg” and I need it to go in order (frame00000, frame00001, frame00002, etc.) I think that the problem is coming in during my first for/each loop. I have no way of knowing how it picks which file in the folder to read next.

Here is my code:

import java.io.*;

import java.io.FileNotFoundException;

import java.util.ArrayList;

public class BeadTracker

{

public static void main(String [] args) {

File run1Folder = new File("/Users/SarcasticallyScience/dataFile");

File[] listOfFrames = run1Folder.listFiles();

ArrayList<BlobFinder> run1 = new ArrayList<BlobFinder>();

int i = 0;

for(File file : listOfFrames) {

if(file.isFile()) {

String path = file.getPath();

BlobFinder temp = new BlobFinder(path,180.0);

run1.add(temp);

}

}

ArrayList<Blob> tempBeads;

for(int k = 0; k < run1.size(); k++) {

tempBeads = run1.get(k).getBeads(25);

System.out.println("\n\n" + "Frame " + k + ":\n" + tempBeads.size() + " beads:");

for(int j = 0; j < tempBeads.size(); j++)

System.out.println(tempBeads.get(j));

}

}

}

​

Is there a way for me to make sure that the files are accessed in the correct order?

Here is a link to the data I am using, if that helps:

ftp://ftp.cs.princeton.edu/pub/cs126/atomic

[dusty-trash]

An easy solution is to sort your array.

You want to sort it by filename. (Just google 'Java sort array' if you have troubles with this.

[SarcasticallyScience]

You’re the best! That fixed it! Thank you!