用Java写的GUI界面上的一只会运动的QQ企鹅，可作为初学者参考交流使用。-GUI interface to use Java to write a will on the campaign QQ Penguin, the exchange can be used as reference for beginners to use.

基于java编程实现登陆界面，有带密码输入功能-An gui applet based on java that provides a login path which need to be confirmed by user name and corect password.

用java写的一个小小的事件处理的程序，能让背景颜色变红边蓝，比较适合初学者学习事件处理-it is a gui