Core Java – Page 2 – Sharp: NCLEX, Java & Python

Java: Wrapper Types and Autoboxing

What is unboxing in Java?

When might you prefer primitives over wrappers?

How can autoboxing lead to hidden bugs in loops?

How would you explain a common mistake when using wrapper classes in an interview?

How do you declare an integer variable for stock quantity?

What mistake occurs when mixing data types in assignments?

Why is 'int' often used for product stock quantities?

How do you decide between 'double' and 'BigDecimal' for product pricing?

What are the consequences of poor variable naming?

How would you explain a common mistake when assigning values to variables in an interview?