delay

说明：  java 性能权威指南 想深入研究的看看(java performance suit higher programmer)

说明：  最小生成树问题，介绍了Kruskal，Prim算法及其优化(Minimum spanning tree problem, Kruskal, Prim algorithm and its optimization are introduced.)

说明：  Linux 下 Onvif 客户端，获取RTSP URL(Linux Platform Onvif)

说明：  按照时间定期删除指定路径下的CSV文件(Delete CSV files on specified paths periodically according to time)

实现两用户NOMA仿真,得到简单的基础模型。(Simulate two NOMA UE)

(1) 设计一个程序，用于根据用户输入的命令行参数数量来计算长方形、正方形、三角形的面积。如果输入的参数为一个、二个、三个则它们应分别对应正方形、长方形、三角形，如果没有参数，则通过异常处理方法现实错误消息。（用于计算面积的方法是一个重载的方法。提示：定义一个抽象的父类，并提供一个抽象的方法area(). 再派生出三个子类，重写area()方法，然后在main方法中用多态来实现具体的面积函数的调用）。-(1) design a program based on user input for the command line parameters to calculate the number of rectangular, square, triangle area. If the input parameter is one, two, three then they should correspond to a square, rectangle, triangle, without parameters, exception handling through the real error message. (Used to calculate the area is an overloaded method. Note: the definition of an abstract parent class, and provides an abstract method area (). To send birth to three sub-classes override area () method, and then in main method using multi-state to achieve a specific area of a function call).

BT121 LE client application

长度为N（N很大）的字符串，求最长回文串(Length N (N large) strings, find the longest palindrome string)

how to custom exceptions

数控自动编程系统，可以通过所画的图形生成走刀路线，然后生成代码-CNC automatic programming system can be generated by the graphics drawing tool line, and then generate code