Here you can find the source of listFiles(String fileName)
public static String[] listFiles(String fileName) throws IOException
//package com.java2s; /*/* ww w . j a va 2 s . co m*/ * Copyright 2004-2005 Germinus XXI, Liferay LLC * * 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. * * This is a derived work from source code taken from Liferay. */ import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.List; public class Main { public static String[] listFiles(String fileName) throws IOException { return listFiles(new File(fileName)); } public static String[] listFiles(File file) throws IOException { List files = new ArrayList(); File[] fileArray = file.listFiles(); for (int i = 0; i < fileArray.length; i++) { if (fileArray[i].isFile()) { files.add(fileArray[i].getName()); } } return (String[]) files.toArray(new String[0]); } }