It implements the service interface class.

它实现服务接口类。

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The interface class is shown in Listing 8.

接口类如清单 8 所示。

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Listing 3 shows the more interesting service-interface class.

清单3展示了更加有趣的服务接口类。

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"People don't understand that we've invented a new class of interface, " Jobs told The New York Times earlier this week.

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