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Oracle Exam 1Z0-829 Topic 2 Question 7 Discussion

Actual exam question for Oracle's 1Z0-829 exam
Question #: 7
Topic #: 2
[All 1Z0-829 Questions]

Given the product class:

And the shop class:

What is the result?

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Suggested Answer: E

The code fragment will fail to compile because the readObject method in the Product class is missing the @Override annotation. The readObject method is a special method that is used to customize the deserialization process of an object. It must be declared as private, have no return type, and take a single parameter of type ObjectInputStream. It must also be annotated with @Override to indicate that it overrides the default behavior of the ObjectInputStream class. Without the @Override annotation, the compiler will treat the readObject method as a normal method and not as a deserialization hook. Therefore, the code fragment will produce a compilation error.Reference:Object Serialization - Oracle, [ObjectInputStream (Java SE 17 & JDK 17) - Oracle]


by Fatima at Dec 11, 2023, 12:19 PM

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