Java小闹钟，运行于网页上的小闹钟程序，可以学习一下如何得到日历对象、得到小时数、判断闹钟是否打开、时间比较、播放声音等基本的小技巧，对Java初学者比较有参考价值。

-Java alarm clock, small alarm clock program running on a web page, you can learn how to get the calendar object to get the number of hours to determine whether the alarm clock on time, play sound, and basic tips for Java beginners reference value.