(Recursively?) Getting Files in a Directory

[Singing Boyo]

This may be advanced, but I don't believe it is quite that complicated.

I am trying to create a program to count the total number of lines/words/characters in a directory. To do this, I need to recursively(if that is the right term) determine whether a file is a directory, and if it is, test all the files in the directory, etc. However, I cannot seem to make the program stop testing. The related code is below. Any help is greatly appreciated.

public class DirectoryWordLineCharCounter {

	private BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
	private File[] all;
	private ArrayList<File>  dirs = new ArrayList<File>(),
					files = new ArrayList<File>();
	
	public DirectoryWordLineCharCounter(){
		System.out.println("Enter the path to the directory you wish to get data for.");
		String dirString = "";
		try {
			dirString = br.readLine();
		} catch (IOException e) {
			System.err.println("An error occurred while processing your request.\nPlease try again. " +
					"If the problem persists, restart the program and try again.\nIf the problem still " +
					"is not fixed, then there may be an error in the file.");
		}
		File dir = new File(dirString);
		if(dir.isDirectory()){
			System.out.println("File is a directory.\nPlease wait while files are processed and data is retrieved");
			all = dir.listFiles();
		}
		for(File f : all){
			if(f.isDirectory()){
					dirs.add(f);
			}
			else {
				files.add(f);
			}
		}
          //<<<PROBLEM POSSIBLY BETWEEN THESE LINES>>>\\
		boolean hasNextLevel = true;
		ArrayList<File> tempFiles = new ArrayList<File>();
		while(hasNextLevel){
			tempFiles.clear();
			hasNextLevel = false;
			for(File f : dirs.toArray(new File[0])){
				if(f.isDirectory()){
						tempFiles.add(f);
						hasNextLevel = true;
				}
				else{
					files.add(f);
				}
			}
			if(hasNextLevel){
				dirs.clear();
				for(int i=0; i<tempFiles.size(); i++){
					dirs.add(tempFiles.get(i));
				}
			}
		}
          //<<<PROBLEM POSSIBLY BETWEEN THESE LINES>>>\\
//code for counting lines continues here

EDIT: I attached the entire code as a text file so anyone who needs to can compile it.

[angryboy]

That's not recursion. its when a method calls itself.
for example:

  public void processDir(File x){
    if(x.isDirectory()){
      System.out.println(x.getAbsolutePath());
      File[] f_list = x.listFiles();
      for(File f : f_list){
        processDir(f);
      }
    }
    else{
      files.add(x);
    }
  }

and then you add threads to make it faster.

[Singing Boyo]

ahh... thanks. You may have just helped me solve my problem