Here you can find the source of createTempDir(String dirname)
public static File createTempDir(String dirname) throws IOException
//package com.java2s; /*// w ww . j av a2s .c om * 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 File createTempDir(String dirname) throws IOException { File tmpDirectory = File.createTempFile(dirname, ".tmp"); tmpDirectory.delete(); if (!tmpDirectory.mkdir()) { throw new IOException("Could not create tmp directory: " + tmpDirectory.getPath()); } tmpDirectory.deleteOnExit(); return tmpDirectory; } }