For this example, the facade interface exposes one public method for each command, as illustrated in Listing 6.

对于这个范例，facade接口为每个command公开了一个公共方法，如清单6所示。

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This interface has one method, the public void PropertyChange (PropertyChangeEvent event).

这个接口有一个方法public void PropertyChange (PropertyChange event event)。

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This interface defines a single method, namely public void event (CometEvent event) to implement in our servlet. Listing 1 shows the two main methods of this servlet.

此接口定义了在我们的Servlet中实现的名为public void event (CometEvent event)的单个方法。

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