src

Java2Demo版,不错的东东,需要先安装j2sdk(Java2Demo edition of the Eastern Yes, the need for installing j2sdk)

用java实现文件下载，通过使用用该类可以下载不同类型的文件。(with java download files through the use of such use can be downloaded for different types of documents.)

ssnmp4j是使用Java进行SNMP编程的包，此文件包含使用snmp4j的代码示例.(Snmp4j is a package for SNMP programming using Java. This file contains code examples using snmp4j.)

超市管理系统，可以进行买卖货物，以及库存的统计(Supermarket management system, you can buy and sell goods, as well as inventory statistics)

thinking in java 是一部经典的java书籍，无论是是对于初学者还是有一定开发经验的java程序员来说，他都是一不好说，称得上是一部经典。(thinking in java java books is a classic, whether for a beginner or have some experience in the development of java programmers, he is a hard to say, be regarded as a classic.)

Utility class to look up carrier logo resource IDs.

用Java实现的SaaS多租户软件，基于SpringBoot和JPA，独立数据库/共享数据库独立Schema的多租户系统。(SaaS multi-tenant software implemented in Java is a multi-tenant system based on SpringBook and JPA, independent database or shared database independent Schema.)

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, )

Java万年历系统，带有记事本功能，界面友好，代码注释详细，适合初学者借鉴学习。(The Calendar with NotePad。)

说明：  用于基础练习，帮助初学者熟悉java基础代码编写，输出1-100的质数。(For basic exercises, help beginners familiar with java basic code, output 1-100 prime number)