[Java]空のディレクトリを削除するメソッド

	/**
	 * delete Empty Directory
	 * @param target
	 */
	public static void deleteEmptyDirectory(String target) {
 
		try {
			File dir = new File(target);
			File[] files = dir.listFiles();
 
			if (files == null) {
				return;
			} else if (files.length == 0) {
//				System.out.println(target);
				dir.delete();
				return;
			}
 
			for(File file: files) {
				if (file.isDirectory()) {
					deleteEmptyDirectory(file.getPath());
				}
			}
		} catch (Exception e) {
			System.out.println(e);
		}
	}