需要指出的是本程序用到了javax.media这个包，这个包不包括在jdk里面，读者可以从sun的网站上去下载，然后把它的目录加到jCreator里面，否则会出现编译错误- It should be noted that this procedure has been used javax.media this package, this package is not included in the jdk inside, readers can get from the sun d