Schedules a file to be deleted when JVM exits. - Java File Path IO

Java examples for File Path IO:File delete

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Description

Schedules a file to be deleted when JVM exits.

Demo Code

/*//from  w w  w . ja  v a 2 s . c om
 * 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.java2s;

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();
        }
    }

    /**
     * Schedules a directory recursively for deletion on JVM exit.
     *
     * @param directory  directory to delete, must not be <code>null</code>
     * @throws NullPointerException if the directory is <code>null</code>
     * @throws IOException in case deletion is unsuccessful
     */
    private static void deleteDirectoryOnExit(File directory)
            throws IOException {
        if (!directory.exists()) {
            return;
        }

        directory.deleteOnExit();
    }
}

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