java网络编程实例，分为客户端和服务器端，可以传送图片，记得把命名为a.jpg的图片放在当前目录，先运行服务器端程序，在运行客户端，点击get picture，例外还有两张JAVA初学的ppt，共五个文件-java network programming instance, is divided into client and server side, you can send pictures, remember the name a.jpg picture on the current d

用java模拟网络五层协议模型，动态展现各层信息间的封装与解封过程，并且实现主机间的通信。-Five layers using java analog network protocol models, dynamic show the package and re-opened between the layers of information and communication between the host.