B. nothing When a class implements the java.io.Serializable interface, it does not need to override any methods. This interface is a marker interface and does not contain any methods. Serialization and deserialization are handled automatically by the Java Virtual Machine (JVM).
To implement the java.io.Serializable interface to the MyPersistenceData class, you don’t need to override any methods. The Serializable interface is a marker interface that doesn’t have any methods. It simply indicates that the class is serializable and its objects can be written to and read from a stream. Therefore, the correct answer is B. nothing.
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