Practice Wrapper Class Methods (6.6) - Chapter 6: Primitive Values, Wrapper Classes, Types and Casting

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10 questions

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6 sample questions

Question 1.
What is the wrapper class for the primitive type char?
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Think of the first letter of the wrapper class.
Question 2.
What does autoboxing do?
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It combines auto and boxing.
3Question 3.
What is the wrapper class for boolean?
- Boolean
- Bool
- BooleanWrapper
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It starts with the same letter.
4Question 4.
Is autoboxing only done for primitive data types?
- True
- False
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Think about what autoboxing means.
Question 5.
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.
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Think about data organization and retrieval.
Question 6.
Create a method that converts a list of string numbers to a list of integers using parsing. Handle potential format exceptions gracefully.
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Consider error handling in case of invalid strings.

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