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计算圆的面积和体积 -Calculation of the area and the volume of yen

一个基于java平台所做的调查问卷开发，简单使用，mysql数据库，便于开发者开发(A questionnaire developed on the basis of Java platform is developed, which is simple to use, and MySQL database is convenient for developers to develop.)

//3.如果校验成功，则调用servlet处理注册请求 try{ userForm.setId(userForm.generateID()); UserDaoImpl service=new UserDaoImpl(); service.add(userForm); //4.如果servlet处理不成功，并且不成功的原因是用户已存在，则跳回注册页面，显示用户已存在 request.setAttribute("message", "注册的用户已存在"); return mapping.findForward("register"); }catch (Exception e) { 请点击左侧文件开始预览 ！预览只提供20%的代码片段，完整代码需下载后查看 加载中 侵权举报

java教学讲义-java Teaching Materials

运用JAVA穿件的网络投票系统，可以进行开发投票自助输入姓名学号 显示今天在那些地方得消费等各种信息

game java 2 love heart and you can load game in java UI, anh you can check in java game, java 3D with game java

子类方法不可比父类方法抛出更多的例外。子类抛出的例外或者与父类抛出的例外一致，或者是父类抛出例外的子类型。或者子类型不抛出例外。(Class methods are not comparable to the parent class method throws more exceptions. The subclass thrown exception or thrown with the parent class exceptions, or the parent class throw exception sub type. Do not throw exceptions or sub type. )

java 基本输入输出 ,很简单的,给自己看看的-java basic input and output, it is simple to see for himself the

用于JAVA ME的游戏代码,供大家学习(Game code for JAVA ME, for all to learn)

说明：  android开发环境安装手册，详细介绍了android项目开发前的环境搭建和安装流程。(Android development environment installation manual, detailed introduction of android project development environment construction and installation process.)