用JAvA 写的一个小倒计时软件，时间到有声音提醒-Countdown software, time to sound alerts

只有简单的功能实现的俄罗斯方块游戏，Java实现，没有下次方块的提醒。-Only a simple function to achieve Tetris game, Java implementation, did not warn the next box.

一款扫雷游戏，有系统界面和游戏界面，点击系统界面的笑脸可以开始游戏，如果游戏失败则会提醒用户游戏失败。(A mine-sweeping game, with a system interface and game interface, click on the smiling face of the system interface to start the game, if the game fails, it will remind users of the game failure.)