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 download site, and then put it inside jCreator added to the directory, otherwise there will be compiler error

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