Here you can find the source of checkDirectory(File directory)
public static void checkDirectory(File directory) throws IOException
//package com.java2s; /*// ww w . j a v a2 s . c om * Copyright 2016 MovingBlocks * * 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; import java.io.IOException; public class Main { public static void checkDirectory(File directory) throws IOException { if (!directory.exists() && !directory.mkdirs()) { throw new IOException("Could not create directory! " + directory); } if (!directory.isDirectory()) { throw new IOException("Directory is not a directory! " + directory); } if (!directory.canRead() || !directory.canWrite()) { throw new IOException("Can not read from or write into directory! " + directory); } } }