Java Delete Tree deleteTree(File file, boolean check)

Description

Recursively delete a directory and its content.

License

Open Source License

Parameter

Parameter	Description
file	The directory to delete
check	Indicates if a canWrite() check must be performed on the tree before deleting any file

Exception

Parameter	Description
IOException	an exception

Return

true if all the tree has been deleted.

Declaration

public static boolean deleteTree(File file, boolean check) throws IOException 

Method Source Code

//package com.java2s;
/*************************************************************************
    /*from ww w .  j  a va2s . c o  m*/
Copyright (C) 2009 Grandite
    
This file is part of Open ModelSphere.
    
Open ModelSphere is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
    
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
or see http://www.gnu.org/licenses/.
    
You can redistribute and/or modify this particular file even under the
terms of the GNU Lesser General Public License (LGPL) as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
    
You should have received a copy of the GNU Lesser General Public License 
(LGPL) along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
or see http://www.gnu.org/licenses/.
    
You can reach Grandite at: 
    
20-1220 Lebourgneuf Blvd.
Quebec, QC
Canada  G2K 2G4
    
or
    
open-modelsphere@grandite.com
    
 **********************************************************************/

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

public class Main {
    /**
     * Recursively delete a directory and its content.
     * 
     * @param file
     *            The directory to delete
     * @param check
     *            Indicates if a canWrite() check must be performed on the tree before deleting any
     *            file
     * @return true if all the tree has been deleted.
     * @throws IOException
     */
    public static boolean deleteTree(File file, boolean check) throws IOException {
        if (file == null || !file.exists())
            return true;
        boolean result = true;
        if (check) {
            result = checkDeleteTree(file);
            if (!result)
                return false;
        }
        if (file.isDirectory()) {
            File[] files = file.listFiles();
            for (File child : files) {
                result = deleteTree(child, false);
                if (!result)
                    break;
            }
        }
        if (result)
            result = file.delete();
        return result;
    }

    /**
     * Recursively delete a directory and its content.
     * 
     * @param file
     *            The directory to delete
     * @return true if all the tree has been deleted.
     * @throws IOException
     */
    public static boolean deleteTree(File file) throws IOException {
        return deleteTree(file, false);
    }

    /**
     * Verify if a directory and its recursive content can be deleted.
     * <p>
     * This is done by performing a canWrite() on all files in the hierarchy.
     * 
     * @param file
     *            The directory to check.
     * @return true if all the content in the tree can be written.
     * @throws IOException
     */
    private static boolean checkDeleteTree(File file) throws IOException {
        if (file == null || !file.exists())
            return true;
        boolean result = true;
        if (file.isDirectory()) {
            File[] files = file.listFiles();
            for (File child : files) {
                result = checkDeleteTree(child);
                if (!result)
                    break;
            }
        }
        if (result)
            result = file.canWrite();
        return result;
    }
}

Related

1. deleteTree(File dir)
2. deleteTree(File dir)
3. deleteTree(File f)
4. deleteTree(final File file)
5. delTree(File dir)
6. delTree(File dir)
7. delTree(File dir, boolean deleteDirItSelf)