聊天小软件，帮助刚开始学的和不熟悉的人，学会如何用JAVA编写一个简单的有图形界面的、可以一对一、一对多聊天的小软件-To chat small software to help people just beginning to learn and are not familiar with, learn how to use JAVA write a simple graphical interface, can be one-to-one, one-to-many chat software