Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.io.File;

public class Main {
    /**
     * Clean the custom directory.
     *
     * @param dirPath The path of directory.
     * @return {@code true}: success<br>{@code false}: fail
     */
    public static boolean cleanCustomDir(final String dirPath) {
        return deleteFilesInDir(dirPath);
    }

    /**
     * Clean the custom directory.
     *
     * @param dir The directory.
     * @return {@code true}: success<br>{@code false}: fail
     */
    public static boolean cleanCustomDir(final File dir) {
        return deleteFilesInDir(dir);
    }

    public static boolean deleteFilesInDir(final String dirPath) {
        return deleteFilesInDir(getFileByPath(dirPath));
    }

    private static boolean deleteFilesInDir(final File dir) {
        if (dir == null)
            return false;
        // dir doesn't exist then return true
        if (!dir.exists())
            return true;
        // dir isn't a directory then return false
        if (!dir.isDirectory())
            return false;
        File[] files = dir.listFiles();
        if (files != null && files.length != 0) {
            for (File file : files) {
                if (file.isFile()) {
                    if (!file.delete())
                        return false;
                } else if (file.isDirectory()) {
                    if (!deleteDir(file))
                        return false;
                }
            }
        }
        return true;
    }

    private static File getFileByPath(final String filePath) {
        return isSpace(filePath) ? null : new File(filePath);
    }

    private static boolean deleteDir(final File dir) {
        if (dir == null)
            return false;
        // dir doesn't exist then return true
        if (!dir.exists())
            return true;
        // dir isn't a directory then return false
        if (!dir.isDirectory())
            return false;
        File[] files = dir.listFiles();
        if (files != null && files.length != 0) {
            for (File file : files) {
                if (file.isFile()) {
                    if (!file.delete())
                        return false;
                } else if (file.isDirectory()) {
                    if (!deleteDir(file))
                        return false;
                }
            }
        }
        return dir.delete();
    }

    private static boolean isSpace(final String s) {
        if (s == null)
            return true;
        for (int i = 0, len = s.length(); i < len; ++i) {
            if (!Character.isWhitespace(s.charAt(i))) {
                return false;
            }
        }
        return true;
    }
}