03

根据值来取ID，或者根据ID来取值，便于两者之间的转换(Exchange from ID and values, we can tanslate between ID and values easily. )

设计一个邮寄包裹的收费系统，在邮寄类型确定的情况下，包裹的邮资由包裹的重量a，邮寄距离b，保价金额c三个参数决定。 如：普通邮件(RegularMail)的邮费 = 3(a+b/100)+0.01c 挂号邮件(RegisterdMail)的邮费 = 4(a+b/100)+0.02c等等 请设计一个系统，计算包裹的邮资。系统使用图形用户界面，用户在图形用户界面选择邮寄类型，再输入重量、距离和报价金额，单击确定按钮系统就计算出包裹的邮资。要求系统能够灵活的增减邮寄类型和修改某种邮寄类型的邮资计算方法。(Design of a parcel of charge system, the type identified in the case of mail, parcels by the weight of the parcel postage a, mailing distance b, c insured amount three parameters. Such as: regular mail (RegularMail) postage = 3 (a+b/100)+0.01c registered mail (RegisterdMail) postage = 4 (a+b/100)+0.02c etc. Please design a system to calculate the parcel postage. System using the graphical user interface, users select the mail type graphical user interface, and then enter the weight, distance and offer amount, click the OK button the system will calculate the parcel postage. Require the system to increase or decrease mailing flexible type and modify some types of mailing postage calculation.)

文件管理系统 shixianwenjianshangchuanhuozhexiazai(Document Management System)

Extension Registry extends Extension Registry Lite.

Hadoop的一个教程，不错的书，值得收藏(Hadoop tutorial, a good book, worthy of collection)

rockplayer播放器，应用程序编程源码，很好的参考资料。(Rockplayer player, application programming source code, a good reference.)

Shows a list of bug reports currently in /sdcard/bugreports.

说明：  Struts2是一个基于MVC设计模式的Web应用框架，它本质上相当于一个servlet，在MVC设计模式中，Struts2作为控制器(Controller)来建立模型与视图的数据交互。(A standard and universal tag library for Java Web developers, Struts2, is a web application framework based on MVC design pattern, which is essentially equivalent to a servlet. In MVC design pattern, Struts2 is used as a controller to establish data interaction between model and view.)

实现与数据库连接，并返回多值，实现多用户登陆的servlet的一个小案例(Achieved with a small case of the database connection and return value to achieve multi-user login servlet)

实现汽车租赁业务 ,著汽车，租赁时间，租什么样的车。。。。。。。。。(dgrvhtytrhctjrj ujr y yktygivr)