Practice Class Object (24.2.1) - Reflection and Annotations

Practise this section

5 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What method do you use to retrieve all fields, including private ones, from a class?
Show hintHide hint
Look for a method that retrieves all declared fields.
Question 2.
Write a code snippet that uses reflection to create an object of a class named 'Person'.
Show hintHide hint
Remember to handle exceptions!
3Question 3.
What does the Class object represent in Java?
- A blueprint for objects
- A representation of loaded classes
- A form of metadata
Show hintHide hint
Focus on what is meant by a Class object.
4Question 4.
True or False: You can directly access private methods without using reflection.
- True
- False
Show hintHide hint
Consider the concept of access modifiers.
Question 5.
Create a Java program using reflection that retrieves and lists all the methods from a class named 'Employee'.
Show hintHide hint
Don’t forget to handle exceptions when dealing with reflective operations.
Question 6.
Write a code snippet that demonstrates dynamically creating an object of a class with a constructor that takes parameters.
Show hintHide hint
Ensure the constructor matches the parameter types correctly.

1 more question in this section. Enroll free to practise them all.