The Basics

Question 1

What are the eight primitive types

Answer 1

boolean, byte, char, short, int, long, float, and double

Question 2

What is autoboxing

Answer 2

“autoboxing” refers to the automatic conversion from a primitive type to an Object using the primitive’s wrapper class.

Question 3

When are Wrapper classes particularly important

Answer 3

Wrapper classes are particularly useful for using primitive types as type parameters in generic classes.

Question 4

When is a method considered overloaded?

Answer 4

A method is overloaded if there are multiple versions with the same name but different parameters.