用swing写的一个socket客户端，功能很简单。但是有些常见的问题都包含在里面。比如自定义皮肤、系统托盘、系统托盘闪动提醒、右下角提示窗口-With swing socket write a client function is very simple. However, some common problems are included in the inside. Such as custom skin, the system tray, system tray flashing ale