一个Android程序编写的小闹钟程序，可以在Android手机上用的哦！-A Android procedures for the preparation of the small alarm clock procedures, can be in the Android mobile phone use!

这是关于android的fragment的一个小demo，可以实现acivity之间的跳转-This is a fragment of a small android demo, can jump between acivity

android开发数字证书最牛X的API，X.509证书、PKCS#10证书申请的解释及生成，签发..短小精悍、功能强大。-android development of digital certificates most cattle X API, X.509 certificates, interpret and generate PKCS# 10 certificate request, the issue .. small and powerful.