java 删除有文件的文件夹

import java.io.File;public class FileRemoveDemo {public static void main(String[] args) {File f = new File("C:/IO");RemoveFile(f);}public static void RemoveFile(File dir) {File[] files = dir.listFiles();for (File file : files) {if (file.isDirectory()) {RemoveFile(file);} else {//不写else会多删某些文件一次System.out.println(file.getAbsolutePath() + "...file..."+ file.delete());}}System.out.println(dir.getAbsolutePath() + "...dir..." + dir.delete());}}