How does Java handle abstract classes?

Can you explain how Java handles abstract classes?

Sure! In Java, an abstract class is a class that cannot be instantiated on its own and is meant to be subclassed. It can contain abstract methods (without a body) and concrete methods (with a body).

What is the purpose of using abstract classes?

Abstract classes allow you to define a base class with common functionality while enforcing a contract for subclasses to implement specific methods.

Can you give me an example of an abstract class in Java?

Certainly! Here's a simple example:

abstract class Animal {
    abstract void sound();
}

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

In this example, Animal is an abstract class with an abstract method sound(), which is implemented by the Dog class.

Are there any restrictions on abstract classes?

Yes, an abstract class cannot be instantiated directly, and it can have both abstract and concrete methods. However, it cannot be declared as final.