polymorphism

Core Concept

Polymorphism is one of the fundamental pillars of Java. Thanks to this power, objects can behave in different ways, inherit logic using Java Inheritance from other objects and even act as prototypes or templates.

Polymorphism is a way of connecting objects to each other,
as we do with the Linking your Thinking concept in this vault.

This allows us to create flexible, interconnected objects,
giving rise to 1001 ways to use creativity. For example, with Java Interface.

How to make use of Polymorphism in Java

We can use this concept in Java as follows:

1. extends: Creates a subclass from another (super).
2. implements: Implements an interface in a class.
3. super: Keyword to access the parent class.

interface Publishable {
    void publish();
}

class Page implements Publishable {
    public void publish() {
        System.out.println("Publishing a Page.");
    }
}

class Post implements Publishable {
    public void publish() {
        System.out.println("Publishing a Post.");
    }
}

Resources

• #article Article on Polymorphism
• #video Basic Video on Polymorphism
• #forum Polymorphism on Stackoverflow