网络编程基础，特别适合初学者。简单的基础java应用，一个简单的服务器和客户端的即使通讯的模拟。实现类的展示类的创立，继承。和构造函数的重载。-Basic network programming, especially suitable for beginners. Basic simple java application, a simple server and client communications, even if the Analog. Type implementation of