What is known for certain about a type parameter when a method constrains it as follows? A) it is either a MouseListener or MouseMotionListener implementer B) it implements MouseListener and MouseMotionListener C) it is of type MouseEvent D) the code is illegal; the & symbol should read and

Question

What is known for certain about a type parameter when a method constrains it as follows? <E extends MouseListener & MouseMotionListener>
A) it is either a MouseListener or MouseMotionListener implementer
B) it implements MouseListener and MouseMotionListener
C) it is of type MouseEvent
D) the code is illegal; the & symbol should read and

Quizplus · Accepted Answer

The type parameter E is constrained to implement both MouseListener and MouseMotionListener interfaces.

What Is Known for Certain About a Type Parameter When