数据结构与算法

实现了一个简单的数据库功能.包括 录入,查询,修改,显示所有记录,等等的基本的数据库功能 .(It implements a simple DB function,includes inputting,querying,modifying and displaying all the records,etc.)

说明：  基于springboot2+ shiro+jwt的真正rest api资源无状态认证权限管理框架,开发人员无需关注权限问题,后端开发完api,前端页面配置即可(Based on the real rest API resource stateless authentication permission management framework of spring boot 2 + Shiro + jwt, developers do not need to pay attention to permission issues. after the API is developed, the front-end page configuration can be completed.)

交通信号灯控制系统，根据输入的车流量计算各信号灯的配时信息(Traffic signal control system, according to the calculation of the input signal of the flow of timing information)

说明：  雇员java学习题目，大学java初学者实验(Employee java learning topics)

说明：  局域网聊天功能的实现，有源码说明，适合初学JAVA的人(the realization of a source that for the beginner JAVA)

archives inside archives Source Code for Andriod.

Class Dumper extends Base Dumper Source Code for Andriod.

要求设计一个SP00LING输出进程和两个请求输出的用户进程，以及一个SP00LING输出服务程序。当请求输出的用户进程希望输出一系列信息时，调用输出服务程序，由输出服务程序将该信息送入输出井。待遇到一个输出结束标志时，表示进程该次的输出文件输出结束。之后，申请一个输出请求块(用来记录请求输出的用户进程的名字、信息在输出井中的位置、要输出信息的长度等)，等待SP00LING进程进行输出。 SP00LING输出进程工作时，根据请求块记录的各进程要输出的信息，将其实际输出到打印机或显示器。这里，SP00LING输出进程与请求输出的用户进程可并发运行。 (Asked to design a user process SP00LING request output and two output processes, and outputs a SP00LING service program. When users want to process requests output output range information, call the output service program, service program by the output information into the output shaft. Treatment to an output end of the flag, which means that the process of the second output file output end. Thereafter, the application of an output request block (name of the user to record the output of the process request, the information on the position of the output well, and length information to be outputted), the process waits SP00LING output. When SP00LING output process work, information requested under each process block records to be output, its actual output to a printer or monitor. Here, the user process and the output process SP00LING request output can be run concurrently.)

Excel中是没有HashMap这个对象的，用惯了Java的程序员，如果需要用到Excel的Hashmap，可以参考附件的源码(Excel is not the object HashMap, used to the Java programmers, if you need to use Excel s Hashmap, you can refer to the attached source)

用java语言自己编写的记事本文件编辑器，希望大家给点意见(Using java language to write your own text editor Notepad, I hope you to the point)