Exercise18_1

java面向对象程序设计，java开发必备(java object-oriented programming, java development essential)

【实例简介】新手练习项目，很适合练习

实时正弦曲线演示，是用mian作主方法的，符合编程规则(Real-time sine curve shows)

创建四个类，分别为Employee类、SalariedEmplyee类、HourlyEmployee类和CommissionEmployee类。其中Employee类是其他三个类的父类。Employee类包含姓名和身份证号。除此之外，SalariedEmployee类还应包含每月工资；HourlyEmployee类还应包含每小时工资数和工作时间数；CommissionEmployee还应包含提成比例和销售总额。每个类都应有合适的构造方法、数据成员的设置和读取方法。编写一个应用程序，创建这些类的对象，并输出与对象相关的信息。注意子类有时需调用父类的构造方法和被覆盖的方法，成员变量定义为private,对有些方法实现重载。 (Create four categories, namely the Employee class, SalariedEmplyee class, HourlyEmployee classes and CommissionEmployee classes. Employee class is the parent class where the other three classes. Employee class contains the name and ID number. In addition, SalariedEmployee class also includes a monthly salary HourlyEmployee class should also include the number of hourly wages and the number of working hours CommissionEmployee should also include the proportion and total sales commission. Each class should have the right to set and read the constructor method, data members. Write an application to create objects of these classes, and output information associated with the object. Sometimes need to call attention to a subclass of the parent class constructor and methods are covered, member variables defined as private, to achieve overloading of some methods.)

calculate catalan number

Java串口的一些程序，对初学者有意哦！大家看看吧(Some of the procedures Java serial port, for beginners to oh! Everybody have a look.)

包括安装需要的WinPcap_4_0_2.exe，jpcap.jar。Jpcap.dll，Jpcap包的安装与配置.doc jpcap功能： 可以实现地址的侦听 捕获末加工的原始数据包。 保存捕获到的数据包到本地文件，从本地文件读出先前捕获的数据包。 自动分辨数据包的类型并产生相应的Java类（如：Ethenet、IPv4、IPv6、ARP/RARP、TCP、UDP和ICMP包）。 根据用户在程序代码中指定的过滤规则过滤数据包。 向网络发送各种数型的数据包 利用Jpcap包能够开发以下几种类型的应用程序： 网络以及协议的分析器 网络监听器 网络流量记录器 网络流量发生器 用户级的网桥、路由 网络入侵检测系统 网络扫描器 网络安全工具箱 (Include the WinPcap_4_0_2. of installing the demand exes, jpcap.jar.Jpcap.dll, Jpcap wraps of gearing and allocation.doc Jpcap function: Can carry out the interception of address Succeed in catching the end processes of the original data wrap. The conservancy succeeds in catching of the data wrap a local document and read from the local document that the data that succeeds in catching in times before wraps. Automatically distinguish the type that the data wraps to combine Java that the creation corresponds(such as:Ethenet and IPv4, IPv6 and ARP|RARP, TCP, UDP and ICMP wrap). According to customer appointed the percolation rule in the procedure code filter a data to wrap. The data that sends out various several toward the network wraps Make use of Jpcap to wrap the applied procedure that can develop several category types as follows: The analytical machine of network and agreement Network monitor Network discharge call register The network discharge machine happens The ne)

GenericServlet类，对于学习javaweb，这个类很重要所以要了解去原理。(GenericServlet class, for learning javaweb, this class is very important so understand the principle.)

pojo的mvc框架，可以和web环境解耦()

前端表格插件测试，实现数据合并，汇总，跨表求和，动态公式计算(Front-end table plug-in testing, data merging, aggregation, cross-table summation, dynamic formula calculation)