根据JAVA的网络和多线程的知识，并利用有关JDBC的功能(可选)，编制一简单的网络通讯程序-According to the network and multi-thread JAVA knowledge, and by using the JDBC function (optional), prepare a simple network communication program

根据JAVA的网络和多线程的知识，并利用有关JDBC的功能,编制的一份简单的网络通讯程序，能够实现一对一或一对多或多对多的通讯。-According to the network and multi-threaded JAVA knowledge, and use the JDBC functionality, the preparation of a simple network communication program able to achieve one or one to many