点广播是一种想当新的技术，可以将信息发送给那些等待接收信息接收者。利用Java的组播技术，设计一个网络广播系统，定时广播指定的内容。-Point radio is a want new technology, you can send information to those who wait for the receiver to receive information. Multicast using Java technology, design a network broadcastin

软件介绍 本demo演示了动态组的创建和销毁以及组成员的添加和删除等功能，并演示了动态组成员间消息的广播功能。-Software introduction This demo demonstrates the creation and destruction of the dynamic group, as well as the addition and deletion of group members and other functions, and demonstrates th