java网络编程，实现简单的聊天室功能，可以看见在线用户，进行连接配置。-java network programming, the realization of a simple chat room feature, you can see online users connect configuration.

Java网络编程源码 带聊天工具远吗 非常好的实例教程-Java network programming source chat tool with a very good example of far right course

用java写的，网络安全聊天，用des加密聊天内容、用rsa加密进行对消息摘要进行签名、用md5对消息生成摘要等等。-Written using java, network security, chat, chat with des encryption, rsa encryption used to sign the message digest using md5 generates a summary of the news and so on.