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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What are the eight primitive data types in Java?
💡 Hint: Think about the basic data types discussed earlier.
Question 2
Easy
What is autoboxing?
💡 Hint: Recall how integers are automatically converted.
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 purpose of wrapper classes in Java?
- To create custom data types
- To treat primitives as objects
- To improve performance
💡 Hint: Think about where you can use primitives.
Question 2
True or False: Autoboxing is the process of converting an Integer to an int.
- True
- False
💡 Hint: Consider which direction each conversion goes.
Solve 3 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a program that takes user input for a decimal number, parses it to an integer, and demonstrates both autoboxing and unboxing.
💡 Hint: Remember to import the Scanner class and handle output appropriately.
Question 2
Write a Java method that checks if a string can be parsed as an integer and return the corresponding integer value or throw an exception.
💡 Hint: Think about exception handling and how to use try-catch blocks.
Challenge and get performance evaluation