What is inheritance explain with an example?

Answer 1

Inheritance is a feature in Java wherein one class will inherit or use the features of another class.

Ex: public class A extends B {

…

}

Here class A is the child class and B the parent. The child inherits the features/methods of the parent and can use them.

Answer 2

Assume you have a class Dog like this:

public class Dog{

int legNumber;

public Dog(){

legNumber = 4;

}

public void onomatopoeia(){

System.out.println("roaf roaf !!");

}

}

And then you get a special case of a dog that not sound "roaf roaf !!"; A hound. Instead of do all the work again you can extend the Dog class like this.

public class Hound extends Dog{

public void onomatopoeia(){

System.out.println("boof boof !!");

}

}

And the new class Hound now have all properties and methods in Dog. The only you have to do now is redefine the onomatopoeia method.