Here you can find the source of isValidDirectory(File directory)
public static boolean isValidDirectory(File directory)
//package com.java2s; /******************************************************************************* * Copyright (c) 2004, 2007 Boeing./*from w w w . j a v a 2 s .c o m*/ * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Boeing - initial API and implementation *******************************************************************************/ import java.io.File; public class Main { public static boolean isValidDirectory(File directory) { if (directory != null && directory.exists() && directory.canRead()) { File[] listOfFiles = directory.listFiles(); if (listOfFiles.length != 0) { return true; } } return false; } }