Author used Java Applet and buffer design pattern to improve performance.

性能方面采用JavaApplet技术和缓存设计模式.

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Java applet is also provided which allows more efficient and flexible access to image data.

并且该图库还提供了Java应用程序可使获取图象数据更加灵活和快捷.

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Unable to start a java applet the version number for your classes is wrong.

无法启动Java小应用程序,您使用的类的版本号有错误.

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