a

说明：  java语言实现的JPEG图片生成程序，是一个课程设计，完整的源码。(java language of the JPEG image generation program is a curriculum design, complete source code.)

java电子书管理系统，对电子书的增删改查，初学者适应(Java student information management system, mainly include: add and delete student information, for information management. Suitable for beginners.)

主要掌握什么是变量，变量的基本类型，变量名的命名规则，以及算术运算符(Main master what is variable, the basic types, variable variable naming rules, and the name of the arithmetic operators )

3.已知车辆（Vehicle）包括机动车（MotoVehicle）和非机动车（NonMotorVehicle）2种。小汽车（Car）、公交车（Bus）等属于机动车，自行车（Bicycle）等属于非机动车。随着能源技术的发展，出现了电动自行车（ElectricBicycle）、电动小汽车（ElectricCar）、天然气公交车（NaturalGasBus）等新型车辆。车辆的共同特征是都能够运行（run），并且有唯一的5位车牌号（LicenseNumber）。机动车的共同特征是采用燃油发动机（FuelEngine），且能够驾驶（drive）。自行车的共同特征是能够骑行（ride）。电动车辆的共同特征是由电池（Battery）驱动。天然气车辆的共同特征是采用天然气（NaturalGas）作为动力。 要求： (1)设计一个类体系描述上述车辆，写出它们的属性和方法。 (2)一家公司（Company）拥有10辆普通小汽车、5辆公交车、2辆电动小汽车和1辆天然气公交车，要求写一个方法listVehicles（）显示所有车辆的信息（车牌号以及采用的动力）。 程序文件命名为Exe4_3.java。(3. Known vehicle (Vehicle) including motor vehicle (MotoVehicle) and non-motorized (NonMotorVehicle) 2 species. Cars (Car), bus (Bus), etc. to motor vehicles, bicycles (Bicycle), etc. are non-motor vehicles. With the development of energy technologies, the emergence of electric bicycles (ElectricBicycle), electric cars (ElectricCar), natural gas buses (NaturalGasBus) and other new vehicles. A common feature of the vehicle is able to run (run), and there are only five license plate number (LicenseNumber). Common feature is the use of a motor vehicle fuel engine (FuelEngine), and is capable of driving (drive). Common feature is the ability to ride a bike (ride). Common characteristics of the electric vehicle is driven by a battery (Battery). A common feature is the use of natural gas vehicles (NaturalGas) as the driving force. Claim: (1) describe the design of a class system of the vehicle, write their properties and methods. (2) a company (Company) owns 10 ordinary cars, five buses, )

安卓listview+radiobutton的小例子，可运行，有安卓基础的很容易上手( U5B89 u5353listview+radiobutton u7684 u5C0F u4B0F u5B50 uFF0C u53EF u8FD0 u884C uFF0C u6709 u5B89 u5353 u57FA u7840 u7684 u5F88 u5BB9 u6613 u4E0A u624B)

java swing develop the manage system,very good(java swing develop the manage system)

说明：  《21天学通java6》课本中源代码打包下载。 只需21天的时间，便可具备使用Java开发运行在计算机中的应用程序、运行在Web服务器中的servlet，以及通过浏览器启动的Java Web Start应用程序的知识和技能。本书可作为初学者学习Java编程技术的教程，也可供已掌握其他语言的程序员学习Java时参考。(&quot 21 Days java6&quot package download the source code for textbook. Just 21 days, you can use the Java development with the computer running the application, running on the Web server servlet, and the browser launched Java Web Start application of knowledge and skills. This book can be as a beginner to learn Java programming tutorial, also available in other languages ​ ​ programmers have mastered learning Java reference.)

3.设计一个能够描述点（point）、线(line)、圆（circle）、矩形（rectangle）和三角形（triangle）等几何形状的类体系，能够计算不同形状的周长和面积（如果能够定义的话）。程序文件命名为Exe3_3.java。(3. Design a point can be described (point), line (line), circle (circle), class hierarchy rectangle (rectangle) and the triangle (triangle) and other geometric shapes, different shapes can calculate perimeter and area (if you can define if). Program file named Exe3_3.java.)

简单的桌面考试系统，javase初级练手小程序(Simple desktop examination system, javase primary try small programs)

arcgis for flex的demo!(arcgis for flex demo!)