Java File Delete delete(File file)

Description

Recursively delete starting at the given file.

License

Open Source License

Declaration

public static boolean delete(File file) throws Exception 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2013 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:/*from  w  w w. j  a  va 2 s  .c o  m*/
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

import java.io.File;
import java.io.IOException;

public class Main {
    /**
      * Recursively delete starting at the given file.
      */
    public static boolean delete(File file) throws Exception {
        // paranoia check... Don't delete root directory because somehow the path was empty
        if (file.getParent() == null) {
            return false;
        }
        return deleteUsingJavaIO(file);
    }

    private static boolean deleteUsingJavaIO(File file) throws IOException {
        // take into account file or its children may be valid symbolic links.
        // we do not want to follow them.
        // The alternative to this is to use EFS to do the delete which does
        // essentially the same thing.
        // The other alternative is to use EFS to get the attributes and see
        // if it is a symbolic link and tailor the delete according to that.
        // This may have incorrect behaviour if the file is a link
        // and read-only.
        if (file.delete() || !file.exists()) {
            // Try to delete the file/link first without recursing to avoid
            // traversing into links
            return true;
        }
        if (file.isDirectory()) {
            File[] children = file.listFiles();
            if (children != null) {
                for (File child : children) {
                    deleteUsingJavaIO(child);
                }
            }
        }
        return file.delete();
    }
}

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