Exam 15-16 02

Question 1

Specify TWO primitive types and TWO reference types that
exist within the Java Standard Edition library. Ensure at least
one of your reference types is a wrapper class. Your answer
should be case sensitive.

Answer 1

Primitive: Integer(int), Boolean

Reference type: String, Array

Question 2

Explain what is meant by autoboxing and unboxing. You should

provide an example to illustrate your answer.

Answer 2

Autoboxing is the automatic conversion between primitive types and their corresponding object wrapper classes.

Example: Converting an Int = integer, double to Double.

Unboxing is when the conversion goes the other way. Wrapper class to primitive type.