All subtypes of a serializable class are themselves serializable.

可序列化类的所有子类型本身都是可序列化的。

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The algorithm USES the name of the serializable class, names of all the interfaces it implements, all the data members of the serializable class, etc.

该算法使用了可序列化的名称、类实现的所有接口的名称、可序列化类的所有数据成员，等等。

youdao

I added implements Serializable to the class signature of QualifiedName and the test then passed.

我为QualifiedName的类签名添加了implements Serializable，这一次测试顺利通过。

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