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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the wrapper class for the primitive type char?
💡 Hint: Think of the first letter of the wrapper class.
Question 2
Easy
What does autoboxing do?
💡 Hint: It combines auto and boxing.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the wrapper class for boolean?
- Boolean
- Bool
- BooleanWrapper
💡 Hint: It starts with the same letter.
Question 2
Is autoboxing only done for primitive data types?
- True
- False
💡 Hint: Think about what autoboxing means.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a class using both primitive types and their wrappers to handle basic statistics (e.g., mean and median). Calculate these values based on user input and store them in a collection.
💡 Hint: Think about data organization and retrieval.
Question 2
Create a method that converts a list of string numbers to a list of integers using parsing. Handle potential format exceptions gracefully.
💡 Hint: Consider error handling in case of invalid strings.
Challenge and get performance evaluation