mypetstore

本程序实现了简单的基于Java程序的perti网运行过程仿真。(Operation simulation of Petri Network)

Application using Entreprise java bean (EJB)

测试在Java中链接hive，实现简单的hive数据查询(test Hive)

mysql连接与读取，输入，输出，读写。(MYSQL JDBC)

200个Java初学者必看的小程序,从初始的hellow world 到jFrame的基础使用方法都包括了(200 Java applet beginners must-see, world hellow to the base from the initial use of jFrame are included)

利用前面提到的SupplyDepot、Transport和CapableOfBeingRefefuelled类/接口，为Air-plane增加一个main()方法，然后为supplyDepot等增加必要的字段、参数和代码，以便CapableOfBeingRefefuelled能够告诉service（）方法需要加多少油。同时要确保Depot中的油应相应地减少，而实现CapableOfBeingRefefuelledi的类对象应相应地增加。(Using the upplyDepot, Transport and ApableOfBeingRefefuelled classes/interfaces mentioned above, add a main () method to Air-plane, and then add the necessary fields, parameters and codes to supplyDepot, so that CapableOfBeingRefefuelled can tell service () how much fuel the method needs. At the same time, we should ensure that the oil in Depot should be reduced accordingly, and the class objects that implement Capable OfBeingRefefuelledi should be increased accordingly.)

这是一个用java实现的用户登录系统。是很简单的一个登陆对话框，没有更深的东西。但对于初学java的人来说是一个很好的案例(This is a java implementation to use a user login system. Is a very simple login dialog box, there is no deeper things. But for people who are beginners java is a good case)

模仿qq程序做的一个简单c/s应用系统，具有服务器程序，和客户端程序等模块，实现简单的聊天功能，程序不太完善，望有兴趣的加以完善，可以让初学java的人了解庞大程序的编程思想。编程工具netbean+mysql完成。(Imitate qq program to do a simple c/s application system with the server program, and client programs and other modules, to achieve a simple chat feature, the program is not perfect, hope to be improved are interested, you can let people know about the huge beginner java programming ideas program. Programming Tools netbean+ mysql complete.)

建立有理数类，实现有理数的四则预算，实现输出分数形式和小数形式。(Establish rational category, the four realize rational budget to achieve the output fractional and decimal form.)

说明：  控制条件语句的变量，在for循环结束后，就不可以被访问了，而while循环还可以访问，如果你继续想使用该变量，则可以使用while循环，否则推荐使用for循环，原因是for循环结束，该变量就从内存中消失，能够提高内存的使用效率。(The variable that controls the conditional statement is not accessible after the for loop has finished, and the while loop is accessible if you continue to use the variable, you can use the while loop. Otherwise, it is recommended to use the for loop, because the variable disappears from memory after the for loop, which can improve memory efficiency.)