Here you can find the source of isReadableFile(File file)
public static boolean isReadableFile(File file)
//package com.java2s; /*-------------------------------------------------------------------------+ | | | Copyright 2005-2011 The ConQAT Project | | | | 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.File; public class Main { /**/*from ww w .j a va 2s .com*/ * Returns whether the given file is non-null, a plain file and is readable. */ public static boolean isReadableFile(File file) { return file != null && file.isFile() && file.canRead(); } }