this my self made polymorphism codes

运行在JDK下的学生成绩管理系统源码.可以查询数据，添加数据，删除数据，和排序等-running on JDK of student performance management system source code. Data can find, add, delete data, and sequencing, etc.

Portlet上的文件上传 类似smartupload-file upload on portlet,like smartupload

非Applet的java电子时钟与秒表小程序 包括多线程控制与界面切换-the non- java applet electronic clock with a stopwatch small programs including multithreaded control and interface switching

用java编写的puzzle游戏-prepared with the puzzle game

一个学习jsp好例子。可供要学习的jsp的用户学习。。 -Good example of a learning jsp. Jsp to learn for users to learn. .

运用MVC设计模式开发的学生成绩查询网站的实现-The use of MVC design pattern developed pupils realize query site

文字信息巡回显示Java小程序-roving display text messages Java Programming

用JAVA模拟DOS环境,执行DIR ，DEL，SET等相关操作！-with JAVA simulated DOS environment, the DIR, DEL, SET, and other related operations.

有关java 实现游戏编程的文章教程，为PDF格式，很不错的。-achieve the java game programming tutorial article, in PDF format, is very good.

基于JAVA的带音乐的普通大学计算机专业课设-JAVA-based band music, the general set up of Computer Specialized