ordering_s2180755112010-(1)

java图书馆系统，功能比较简单适合初学者！(java library system！)

回文串的实现，适合初学java的人使用和阅读(Palindrome string implementations, suitable for beginners java people use and read)

说明：  基于Spring Boot 2.4、 Spring Cloud 2020 & Alibaba、 OAuth2 的微服务RBAC 权限管理系统。 记得上边点个star 关注更新(The micro service RBAC privilege management system based on spring boot 2.4, spring cloud 2020 & Alibaba, oauth2. Remember to click a star above to follow the update)

Solution Manual for Programming with Objects c++ and java Programming with Objects: A Comparative Presentation of Object Oriented Programmming(Solution Manual for Programming with Objects c++ And java Programming with Objects: A Comparative Presentation of Object Oriented Programmming)

爬虫 JAVA 版本的爬虫 JAVA 版本的(爬虫 JAVA 版本的)

说明：  源码和依赖的jar包都在压缩文件里 test目录下有行情的demo，交易部分的API还没完全做好，可以连上前置和登录 这个java接口算是预览版吧(Source code and dependent jar packages are all demo in the test directory of the compressed file. The API of the transaction part is not yet complete. You can connect the pre-and login java interface as a preview version.)

Property Permission extends Basic Permission Source Code for Andriod.

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)

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, )

本代码是用java编写的住院管理系统菜单界面源代码，很有用的(The java code is used to prepare the patient menu interface management system source code, very useful)