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4 cards from this section. Quick, good the night before a test.
What is the default value of an 'int' type in Java?
Think about variable initialization.
Which of these is a primitive data type: String, int, or boolean?
Remember the definitions of primitive types.
How many primitive data types are there in Java?
Recall the complete list presented earlier.
True or False: Wrapper classes are more memory-efficient than primitive types.
Consider memory usage of objects.
Write a Java program that uses all primitive types and their corresponding wrapper classes. Explain the outputs.
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.
Reflect on how memory management in Java affects performance.
6 more questions in this section. Enroll free to practise them all.
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