再帰的なファイルの探索

import java.io.*;

import java.util.*;
public class MkLst {
    private static final String ROOT = "/foo/bar/hoge";
    public static void main(String args) {

        List flst = new ArrayList();

        lsr(new File(ROOT), flst);
        for (int i = 0; i < flst.size(); i++)

            System.out.println(flst.get(i));

    }
    private static void lsr(File file, List flst) {

        if (!file.exists())

            return;
        if (file.isDirectory()) {

            File children = file.listFiles();
            for (int i = 0; i < children.length; i++)

                lsr(children[i], flst);

        } else {

            flst.add(file);

        }

    }
}