利用FlowLayout布局设计AWT登录界面，程序代码如下，编译并运行程序，记录程序运行结果。单击窗口的“关闭”按钮时是否能关闭窗口。-Use FlowLayout layout design AWT login screen, and the program code is as follows, compile and run the program, record to run the program results. Click on the "off" button window whether can close the window.