6.8 - Summary
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Practice Questions
Test your understanding with targeted questions
What is the default value of an 'int' type in Java?
💡 Hint: Think about variable initialization.
Which of these is a primitive data type: String, int, or boolean?
💡 Hint: Remember the definitions of primitive types.
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Interactive Quizzes
Quick quizzes to reinforce your learning
How many primitive data types are there in Java?
💡 Hint: Recall the complete list presented earlier.
True or False: Wrapper classes are more memory-efficient than primitive types.
💡 Hint: Consider memory usage of objects.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
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.
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.
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Reference links
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