Java删除目录及其子目录

代码如下：

package com.netsdk.demo;
import java.io.File;
/**
 * @author 四个空格-https://www.4spaces.org/
 */
public class FileDeleteDemo {
    public static void main(String[] args) {
        File dir = new File("D:\\upload\\voice\\162OTA2016008029");
        FileDeleteDemo.deleteDir(dir);
    }

    /**
     * 删除空目录
     *
     * @param dir 将要删除的目录路径
     */
    private static void doDeleteEmptyDir(String dir) {
        boolean success = (new File(dir)).delete();
        if (success) {
            System.out.println("Successfully deleted empty directory: " + dir);
        } else {
            System.out.println("Failed to delete empty directory: " + dir);
        }
    }

    /**
     * 递归删除指定目录及其子目录下所有文件
     * File.delete()用于删除“某个文件或者空目录”！所以要删除某个目录及其中的所有文件和子目录，要进行递归删除
     *
     * @param dir 将要删除的文件目录
     * @return boolean Returns "true" if all deletions were successful.
     * If a deletion fails, the method stops attempting to
     * delete and returns "false".
     */
    private static boolean deleteDir(File dir) {
        if (dir.isDirectory()) {
            String[] children = dir.list();
            //递归删除目录中的子目录下
            for (int i = 0; i < children.length; i++) {
                boolean success = deleteDir(new File(dir, children[i]));
                if (!success) {
                    return false;
                }
            }
        }
        // 目录此时为空，可以删除
        return dir.delete();
    }
}