一个简单的模拟电信计费功能的系统 采用JAVA 网络编程-A simple function of analog telecommunications billing system uses JAVA Network Programming

android在java层面操作底层系统的源代码，并包含各个硬件的参数，作为编程开发需要了解底层知识的人非常有用-android in the the java level of the source code of the underlying system operation, and contains various hardware parameters, programming developers need to understand the underlying knowledge

综合利用Java GUI、Java Graphics、多线程和网络技术编程实现网络白板程序。网络白板是一种基于网络的程序，用户可以通过该程序将文字、图片等传输给其他用户查看。-Utilization Java GUI, Java Graphics, multi-threading and network programming network whiteboard technology program. Network whiteboard is a web-based program, thr