[Solved] Consider these classes:class Employee { void work() { System.out.println("Employee working");... } }How can runtime polymorphism be used to execute the work() method for different employee types? | Java

Java - Polymorphism

Consider these classes:

class Employee { void work() { System.out.println("Employee working"); } } class Manager extends Employee { void work() { System.out.println("Manager managing"); } } class Developer extends Employee { void work() { System.out.println("Developer coding"); } }

How can runtime polymorphism be used to execute the work() method for different employee types?

ABy creating an Employee reference and assigning it to Manager or Developer objects and calling work()

BBy calling static methods directly from Employee class

CBy overloading the work() method with different parameters

DBy using final methods in Employee class

Step-by-Step Solution

Solution:

Step 1: Understand runtime polymorphism
It allows a superclass reference to point to subclass objects and invoke overridden methods.
Step 2: Apply to given classes
Using Employee reference to refer to Manager or Developer objects and calling work() will invoke the overridden method of the actual object.
Final Answer:
Option A -> Option A
Quick Check:
Superclass reference with subclass object calls overridden method [OK]

Quick Trick: Superclass reference calls subclass overridden method [OK]

Common Mistakes:

Using static methods which do not support polymorphism
Confusing overloading with overriding
Using final methods which cannot be overridden

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More Java Quizzes

Consider these classes:

Step 1: Understand runtime polymorphism

Step 2: Apply to given classes

Final Answer:

Quick Check:

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