调度JVM退出时要删除的文件。

/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You 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.

 */

//package com.nowjava;
/*
N o w  J a v a  .   c o m 提 供
*/


import java.io.File;


import java.io.IOException;


public class Main {

    public static void main(String[] argv) throws Exception {

        File file = new File("Main.java");

        forceDeleteOnExit(file);

    }


    /**

     * Schedules a file to be deleted when JVM exits.

     * If file is directory delete it and all sub-directories.

     *

     * @param file  file or directory to delete, must not be <code>null</code>

     * @throws NullPointerException if the file is <code>null</code>

     * @throws IOException in case deletion is unsuccessful

     */

    public static void forceDeleteOnExit(File file) throws IOException {

        if (file.isDirectory()) {

            deleteDirectoryOnExit(file);

        } else {

            file.deleteOnExit();

        }

    }
    /*来自 
     n o w    j a v a  . c o m*/