资源环境项引用由示例应用程序用于确定将浏览或将消息发送到哪个目的地。

The resource environment entry references are used by the sample application to determine which destinations it will browse or send messages to.

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通过在 CLASSPATH 环境变量中引用该位置，就可以使用那个文件。

You can take advantage of that by simply referencing it in the CLASSPATH environment variable.

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该特性比函数指针更强大，因为它允许内部类实例保持对创建它的环境的引用。

This feature is richer than function Pointers because it allows the inner class instance to retain a reference to the environment in which it was created.

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