Question

Of the three Rules presented in the pre-reading material which of the following are required to make polymorphism possible in Java? Select one:

a. Rule 2 and 3
b. Rule 1 and 3
c. Rule 1 and 2
d. Rule 1,2 and 3
e. Rule 3
f. Rule 1
g. Rule 2

Answer 1

In order to make polymorphism possible in Java, we need to adhere to Rule 1, Rule 2, and Rule 3.

Step-by-step explanation:

In order to make polymorphism possible in Java, we need to adhere to Rule 1, Rule 2, and Rule 3.

Rule 1 states that the classes must have an inheritance hierarchy, meaning they should be related through inheritance.

Rule 2 states that the methods with the same name should be defined in the parent and child classes, allowing for method overriding.

Rule 3 states that the objects should be accessed through the reference of their parent class, allowing for dynamic binding.

Therefore, the correct answer is d. Rule 1, 2, and 3.