Here you can find the source of getFileNames(String dirPath, FilenameFilter fileNameFilter)
public static String[] getFileNames(String dirPath, FilenameFilter fileNameFilter) throws Exception
//package com.java2s; /*/*from w w w . j a v a 2s . c om*/ * IzPack - Copyright 2001-2008 Julien Ponge, All Rights Reserved. * * http://izpack.org/ * http://izpack.codehaus.org/ * * Copyright 2005 Marc Eppelmann * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.io.*; public class Main { public static String[] getFileNames(String dirPath) throws Exception { return getFileNames(dirPath, null); } public static String[] getFileNames(String dirPath, FilenameFilter fileNameFilter) throws Exception { String fileNames[] = null; File dir = new File(dirPath); if (dir.isDirectory()) { if (fileNameFilter != null) { fileNames = dir.list(fileNameFilter); } else { fileNames = dir.list(); } } return fileNames; } }