Practice Best Practices (20.11) - Serialization and Deserialization

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9 questions

Flashcard drill
4 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 does the transient keyword do?
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Think about sensitive fields in your class.
Question 2.
What is the purpose of serialVersionUID?
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Remember, it helps avoid errors during deserialization.
3Question 3.
What is the purpose of declaring serialVersionUID in a class?
- To create a new object
- To verify compatibility during deserialization
- To serialize transient fields
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Think about what happens if the class definition changes.
4Question 4.
True or False: All fields in a serializable class are serialized by default.
- True
- False
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Consider how transient affects this statement.
Question 5.
Create a Java class implementing Serializable with potential issues if serialVersionUID is omitted. List those issues.
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Consider modifications that affect class compatibility.
Question 6.
Refactor a given class to use Externalizable instead of Serializable, explaining the changes made.
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Think about what specific data needs to be controlled during serialization.

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