通过面向对象的思想和多线程，java动画，双缓存技术，java对多媒体的支持等，在网页上设计了一个简单的音乐电子万年历，从而使音乐时钟的基本功能借助于java多线程的思想和技术得以实现。-through object-oriented thinking and multithreading, java animation, double-buffer technology, java to support multimedia on the web page design of a simple

this a online message board system.it contains the basic java techology and JSP ,servlet also used in the actions.-this is a online message board system.it contains the basic java techology and JSP ,servlet also used in the actions.