No activator class is required for this bundle.

这个bundle不需要activator类。

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The activator class is responsible for invoking start() and stop() methods in the bundles.

激活器类负责在包中调用 start() 和 stop() 方法。

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The Manifest file also has other information, such as the name of the bundle activator class.

Manifest文件还包含其他信息，如包激活器类的名称等。

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