Ch07

说明：  J2EE规范的JAAS开发安全实例：介绍了J2EE的安全模式、中间件应用的JAAS实现。(J2EE standard JAAS security development examples : a J2EE security model, middleware applications JAAS achieve.)

利用OpenGL实现三维绘图-use OpenGL 3D graphics

This file helps to send the message between client and server

循环冗余码的生成和验证:数字通信中的编码分为信源编码和信道编码两大类。为了提高数字通信的可靠性采取的编码称为信道编码，又称抗干扰编码。数字通信中为了尽可能地提高通信的可靠性，需要采用信道编码技术，对可能或已经出现的差错进行控制，CRC码就是其中的一种编码技术。本实验就是编写RCR编码，可以模拟发送信息，噪声加入，检测验证，信息重发的过程!(Cyclic redundancy code generation and validation: digital communication in the coding is divided into source coding and channel coding two broad categories. In order to improve the reliability of digital communications to the code known as channel coding, also known as anti-interference codes. Digital communication as much as possible in order to improve the reliability of communication need to use channel coding techniques, which may or may control the errors that have emerged, CRC code is one of a kind of coding techniques. RCR in this experiment is to write code that can simulate send a message, noise adding, testing verification, information, process re-issued!)

Android. ActivityForResult的用法.(Android. ActivityForResult.)

新手JSP连接数据库必备，请自行修改数据库用户名及密码(JSP connect to the database novice necessary, please modify the database user name and password)

加速度感应器的实现，重力加速度感应，感应器的DEmo(Implementation of the acceleration sensor, gravity sensor, the sensor DEmo)

apache-tomcat-9.0.4-src

北交大机器人对管理模块，比较简单的一些功能模块，，，，，，，

rtmp_protocol协议，是最全的关于rtmp协议，对flash流媒体开发有很大的帮助。(rtmp_protocol agreement is the most comprehensive agreement on the rtmp, flash streaming media on the development of great help.)