utilities

编写HibernateUtil工具类，用工厂方法设计模式实现(Write HibernateUtil tools with factory method design pattern)

短信群发功能的实现,还是不错的,有兴趣的可以看看.(To achieve bulk SMS function is good, interested can look at.)

一个很好的人才网，用JSP代码写的，好用(Talent Network)

IBM robocode的冠军代码Vapour，直接可用，适合开发时做对比使用(IBM robocode champion Code Vapour, directly available for use when developing to do comparison )

java实现的堆排序，你可以排序多种类型，可以实现代码重用，很好地利用了面向对象的思想(java achieve heap sort, you can sort a variety of types, you can achieve code reuse, good use of the object-oriented thinking)

说明：  java实现客户端/服务器的ssl通信。附带证书。(java achieve client/server ssl communication. Attached to the certificate.)

说明：  创建一个类，提供与java .lang.Math同名的所有方法，但每个方法均按度数而非弧度进行运算。具体要求是:在自己编写的类中，对Math类中的每一个方法加一层包装。(Create a class that provides all methods with the same name as java. lang. Math, but each method operates in degrees rather than radians. Specific requirements are: in their own class, each method in the Math class with a layer of packaging.)

实用性代码，可以在手机等移动设备上很好的使用，可操作性强。(Usefulness of the code can be very good for use on mobile phones and other mobile devices operable.)

利用spring MVC框架实现登录的功能，该代码主要是用于熟悉spring MVC框架的用法(Using the spring MVC framework can realize the function of login, the code is mainly used to familiar with the use of the spring MVC framework)

自己利用java实现的股票K线图，模拟股票一天内的走势，利用了jfreechart(Java implementation of the stock chart)