Practice Custom Serialization With Externalizable (20.7) - Serialization and Deserialization

Practice: Custom Serialization with Externalizable

Lesson 20.7Serialization and Deserialization

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the main purpose of the Externalizable interface?
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Think about how serialization differs between Externalizable and Serializable.
Question 2.
Name the two methods you must implement when using Externalizable.
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Consider what you need to do for serialization and deserialization.
3Question 3.
What must a class implement to allow custom serialization?
- Serializable
- Externalizable
- Cloneable
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Think about which interface provides more control.
4Question 4.
True or False: Using Externalizable, all fields in a class must be serialized.
- True
- False
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Consider why you might want to skip fields.
Question 5.
Design a custom object in Java that implements Externalizable. Explain how your choice of fields impacts serialization performance.
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Contemplate the size and sensitivity of data.
Question 6.
Discuss how you would handle versioning issues when using Externalizable across different versions of an application.
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Think about maintaining backward compatibility.

5 more questions in this section. Enroll free to practise them all.