java常用工具方法收藏-删除文件及目录

/**
 * 删除文件及目录
 * @param folder
 */
public void deleteFolder(File folder){
	File[] files = folder.listFiles();
	if (files != null) {
		for (File file : files) {
			if (file.isDirectory()) {
				deleteFolder(file);
			}
			else {
				file.delete();
			}
		}
	}
	folder.delete();
}