If you don't go after what you want, you'll never have it. If you don't step forward, you're always in the same place.
Java IO
//为什么一定要close 呢? /** * 第一: 让流对象变成垃圾对象,这样可以被垃圾回收器GC 回收,释放内存 * 第二: 为来数据的安全性,关闭后,无法再写入数据 * 第三: 通知系统去释放跟该件相关的资源 */
未完待续