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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the default value of an 'int' type in Java?
💡 Hint: Think about variable initialization.
Question 2
Easy
Which of these is a primitive data type: String, int, or boolean?
💡 Hint: Remember the definitions of primitive types.
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
How many primitive data types are there in Java?
- 6
- 7
- 8
- 9
💡 Hint: Recall the complete list presented earlier.
Question 2
True or False: Wrapper classes are more memory-efficient than primitive types.
- True
- False
💡 Hint: Consider memory usage of objects.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Write a Java program that uses all primitive types and their corresponding wrapper classes. Explain the outputs.
💡 Hint: Incorporate your knowledge about creation and usage of wrapper classes.
Question 2
Discuss the possible downsides of using wrapper classes instead of primitive types in a performance-sensitive application.
💡 Hint: Reflect on how memory management in Java affects performance.
Challenge and get performance evaluation