6.5 - AutoBoxing and UnBoxing
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Practice Questions
Test your understanding with targeted questions
What does AutoBoxing do?
💡 Hint: Think about what happens when you assign an int to an Integer.
What is the opposite of AutoBoxing?
💡 Hint: Remember what happens when you retrieve a primitive from its wrapper.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is AutoBoxing?
💡 Hint: Think about the direction of the conversion.
True or False: UnBoxing can lead to a NullPointerException.
💡 Hint: Consider what happens when trying to access null.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Write a Java program that illustrates both AutoBoxing and UnBoxing processes while storing multiple primitive types in an ArrayList.
💡 Hint: Think about how you store numbers in ArrayLists and return them back as primitives.
Discuss the potential risks of UnBoxing a null value in Java and provide code to demonstrate the issue.
💡 Hint: Think about what happens when you try to retrieve a primitive from a null wrapper.
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