HotelSystem

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.)

java写的qq聊天软件 带有客户端和服务端(qq chat software written in java client and server with)

Extension Registry extends Extension Registry Lite.

说明：  一只青蛙一次可以跳上1级台阶，也可以跳上2级。求该青蛙跳上一个n级的台阶总共有多少种跳法。要求：分别用普通方法和递归方法实现(A frog can jump up a step or two at a time. Find out how many jumping methods the frog can use to jump up an n-step. Requirements: Implemented by common method and recursive method respectively)

一个简单的java聊天界面，当关闭时提醒是否确认关闭，当点击about时将出现相关帮助说明。(A simple java chat interface to remind you to confirm when the closed off, will appear when you click help about instructions.)

oscache的缓存实例，可以用于学习二级级缓存，及应用到项目中，加速数据库查找效率。(oscache cache instance, can be used to study the two-level cache, and applied to the project, to accelerate the efficiency of database lookup.)

【实例简介】 内含源码、数据库文件、项目日志和项目报告 会员积分消费管理系统是一个数据库应用系统，会员所有信息都是保存在数据库中。本系统将主要实现以下功能:注册会员、查询会员、会员、查询消费记录功能、会员管理、今日消费统计。

java开发的bin packing， 个人感觉很有用。。。。可以下载学习(The bin packing developed by Java is very useful to me. Downloadable Learning)

java实用小计算器，模仿windows自带的计算器，功能全面(Java practical calculator, imitate small Windows calculator attached, comprehensive functions)

说明：  模仿struts实现的MVC项目，可帮助理解struts的机制(Imitation struts MVC project implementation can help to understand the mechanism struts)