6.3 - Wrapper Classes
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Practice Questions
Test your understanding with targeted questions
What is the wrapper class for int?
💡 Hint: Think of the object version of an int.
What happens during autoboxing?
💡 Hint: Consider packing a value into a box.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the wrapper class for boolean?
💡 Hint: It's the same name but capitalized.
Autoboxing is...
💡 Hint: Remember the concept of automatic packing.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Create a class that demonstrates both the use of a custom object and a wrapper class within an ArrayList. Show how you can add both and print their values.
💡 Hint: Utilize an ArrayList that can hold objects of different types.
Write a Java method that takes an array of strings that represent numbers and returns an array of integers using wrapper methods.
💡 Hint: Think about how to loop through the array and use parse methods.
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