Here you can find the source of checkDirPath(final String path)
public static File checkDirPath(final String path) throws IOException
//package com.java2s; /*/*from w w w . j ava 2 s . co m*/ * Copyright (C) 2013 Universitat Pompeu Fabra * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.io.File; import java.io.IOException; public class Main { public static File checkDirPath(final String path) throws IOException { final File dir = new File(path); if (!dir.exists()) { throw new IOException("Directory does not exist: " + path); } if (!dir.isDirectory()) { throw new IOException("Path does not point to a directory: " + path); } return dir; } }