Java Recursive Delete recursiveDelete(File f)

Description

Recursively delete files starting with the one that is given.

License

Open Source License

Parameter

Parameter	Description
f	File to delete.

Declaration

public static synchronized void recursiveDelete(File f) 

Method Source Code

//package com.java2s;
/*//from w w  w .ja  v  a 2  s.  c  om
 * FileUtils.java 
 *
 * Created by OneBigCD
 * Copyright (c) 2004-2013, Pat Farrell, All rights reserved.
 * 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. * 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.*;

public class Main {
    /**
     * Recursively delete files starting with the one that is given.
     * Attempt to do this "Atomically" by moving the file/dir
     * to a new location first then deleting from there.
     * 
     * @param f File to delete.
     */
    public static synchronized void recursiveDelete(File f) {
        if (f == null)
            return;
        if (!f.exists())
            return;

        // find a parent dir to move to before delete
        File parent = f.getParentFile();
        if (parent == null) {
            throw new IllegalArgumentException("Cannot delete a root directory");
        }
        // delete "atomically" by renaming first
        // then deleting all of the parts.
        File moveTo = new File(parent, "rdelete" + System.currentTimeMillis());
        boolean moved = f.renameTo(moveTo);
        if (moved == true)
            f = moveTo;
        simpleRecursiveDelete(f);
    }

    /** delete speficied file and all subdirectories
     * @param f file to delete
     */
    private static synchronized void simpleRecursiveDelete(File f) {
        if (!f.isDirectory()) {
            f.delete();
            return;
        }
        String[] files = f.list();
        if (files == null)
            return;
        for (int i = 0; i < files.length; i++) {
            File theFile = new File(f, files[i]);
            simpleRecursiveDelete(theFile);
        }
        f.delete();
    }
}

Related

1. recursiveDelete(File dir)
2. recursiveDelete(File dir, boolean deleteBase)
3. recursiveDelete(File dirPath)
4. recursiveDelete(File f)
5. recursiveDelete(File f)
6. recursiveDelete(File f)
7. recursiveDelete(File file)
8. recursiveDelete(File file)
9. recursiveDelete(File file)