可以单机模拟多台电脑的环境。当然也可以在Eclipse中配置运行时程序的参数来运行程序（运行时参数主要负责传递端口号，服务器地址等）。 -Can be stand-alone simulation environment of multiple computers. Of course, the parameters of the program can also be configured to run in Eclipse to run the program (run-time par