My understanding in java Polymorphism

📌 What is Polymorphism?

Polymorphism literally means "many forms". In Java, it allows objects to take on multiple forms depending on the context.

In other words:

• A single interface can be used to represent different underlying forms (data types).

🎯 Why Use Polymorphism?

Polymorphism makes your code:

• More flexible
• Easier to extend
• Cleaner and more readable

🔁 What is Method Overriding in Java?

Method Overriding happens when a subclass (child class) provides a specific implementation of a method that is already defined in its superclass (parent class).

Key Points:

• Method must have same name, same return type, and same parameters. -Used for runtime polymorphism. -Allows a subclass to provide a custom behavior for a method inherited from the parent class.

Example:

class Animal {
    void sound() {
        System.out.println("Animal makes a sound");
    }
}

class Dog extends Animal {
    @Override
    void sound() {
        System.out.println("Dog barks");
    }
}

🔄 What is Method Overloading in Java?

Method Overloading means having multiple methods in the same class with the same name but different parameters (number or type).

Key Points:

• Happens within the same class.
• Used for compile-time polymorphism.
• Helps in increasing the readability of the program.

Example:

class MathUtils {
    int add(int a, int b) {
        return a + b;
    }

    double add(double a, double b) {
        return a + b;
    }

    int add(int a, int b, int c) {
        return a + b + c;
    }
}