Polymorphism in Method Parameters

Learning Objective: Understand how using parent class type in method parameters provides flexibility

Overview

Define a method with parent class type parameter and confirm different child class instances can be passed.

Specifications

• Define print(Document doc) method in Printer class
• Define getContent() method in Document class (returns "Generic document")
• PDF and WordDocument classes extend Document and override getContent()
• Confirm Printer can print any type of Document

Output Format

Printing: PDF content
Printing: Word content