"Naked" parameters in casts or instanceof operations.

数据类型转换或instance of操作中的“外露”参数。

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In some cases, it may be sensible to use an instanceof check prior to doing a class cast.

在某些情况下，在做类型转换之前用instance of进行检查是有意义的。

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The instanceof operator resolves to true if the given object is an instance of the given class.

如果给定对象是给定类的实例，则 instanceof 操作符解析为真。

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