编写小程序，小程序界面设置BorderLayout布局，创建一个面板Panel，面板放置一个文本框、两个按钮，把面板放置在小程序的南面,单击一个按钮显示一张图片。-Procedures for the preparation of small, small program interface BorderLayout layout settings to create a panel Panel, panel placed a text box, two buttons, the panel placed in the south of the small program, click a button to display a picture.