Java tutorial
//package com.java2s; /* * Copyright (C) 2010 Stewart Gateley <birbeck@gmail.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.io.File; import java.io.FileFilter; import java.util.Collection; public class Main { public static void innerListFiles(Collection<File> files, File directory, FileFilter filter) { File[] found = directory.listFiles(); if (found != null) { for (int i = 0; i < found.length; i++) { if (found[i].isDirectory()) { innerListFiles(files, found[i], filter); } else { File[] found2 = directory.listFiles((FileFilter) filter); for (int j = 0; j < found2.length; j++) { files.add(found2[j]); } } } } } public static File[] listFiles(File directory, boolean recurse, FileFilter filter) { if (!recurse) { return directory.listFiles(filter); } else { Collection<File> mFiles = new java.util.LinkedList<File>(); innerListFiles(mFiles, directory, filter); return (File[]) mFiles.toArray(new File[mFiles.size()]); } } }