Practice Accessing Private Members (7.2.6) - Annotations and Reflection API

Practice: Accessing Private Members

Lesson 7.2.6Annotations and Reflection API

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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 purpose of setAccessible(true) in the context of Reflection?
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Think of what 'accessible' means.
Question 2.
Why is Reflection considered powerful?
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What can it do that regular code cannot?
3Question 3.
What does the Reflection API allow you to do?
- Modify private fields directly
- Inspect and modify classes at runtime
- Only read public methods
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Focus on runtime dynamics.
4Question 4.
Setting a field as accessible with setAccessible modifies its privacy level.
- True
- False
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Consider how access levels are defined.
Question 5.
Create a Java program that uses Reflection to access a private field in any class and modify its value. Discuss the potential risks with this approach.
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Reflect on real-world implications of modifying access controls.
Question 6.
Discuss how you might test a class's private state using Reflection in unit tests, and provide a coding example.
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Consider the balance between encapsulation and test coverage.

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