Java File Path Delete deleteDir(File dir)

Description

Deletes all files and subdirectories under dir.

License

Open Source License

Parameter

Parameter	Description
dir	a parameter

Return

True if success.

Declaration

public static boolean deleteDir(File dir) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.*;

public class Main {
    /**/*from   w  w w. j a  v a  2  s. co  m*/
     * Deletes all files and subdirectories under dir. Returns true if all
     * deletions were successful. If a deletion fails, the method stops
     * attempting to delete and returns false.
     * 
     * @param dir
     * @return True if success.
     */
    public static boolean deleteDir(File dir) {
        if (dir.isDirectory()) {
            String[] children = dir.list();
            for (int i = 0; i < children.length; i++) {
                boolean success = deleteDir(new File(dir, children[i]));
                if (!success) {
                    return false;
                }
            }
        }
        // The directory is now empty so delete it
        return dir.delete();
    }

    /**
     * returns true if fileName is a directory, otherwise false
     * 
     * @param fileName
     *            filename to check if it's a directory
     * @return true or false
     */
    public static boolean isDirectory(String fileName) {
        boolean result = false;
        File tmpFile = new File(fileName);
        fileName = fileName.replace('/', File.separatorChar);
        String tmpPath = tmpFile.getAbsolutePath();
        if (tmpPath.equalsIgnoreCase(fileName)) {
            result = true;
        }
        tmpPath = tmpFile.getPath();
        if (tmpPath.equalsIgnoreCase(fileName)) {
            result = true;
        }
        tmpFile = null;
        tmpPath = null;
        return result;
    }

    /**
     * delete file
     * 
     * @param fileName
     *            file to delete
     * @return true if success, otherwise false
     */
    public static boolean delete(String fileName) throws Exception {
        File f = new File(fileName);
        // Make sure the file or directory exists and isn't write protected
        if (!f.exists())
            throw new IllegalArgumentException("Delete: no such file or directory: " + fileName);

        if (!f.canWrite())
            throw new IllegalArgumentException("Delete: write protected: " + fileName);

        // If it is a directory, make sure it is empty
        if (f.isDirectory()) {
            String[] files = f.list();
            if (files.length > 0)
                throw new IllegalArgumentException("Delete: directory not empty: " + fileName);
        }

        // Attempt to delete it
        boolean success = f.delete();

        if (!success)
            throw new IllegalArgumentException("Delete: deletion of " + fileName + " failed");
        f = null;
        return success;
    }
}

Related

1. deleteDir(File dir)
2. deleteDir(File dir)
3. deleteDir(File dir)
4. deleteDir(File dir)
5. deleteDir(File dir)
6. deleteDir(File dir)
7. deleteDir(File dir)
8. deleteDir(File dir)
9. deleteDir(File dir)