Types of Inheritance in Java

                 On the basis of class in Java, three types of inheritance is defined: Single, Multilevel and Hierarchical Inheritance

    1. Single Inheritance:

            When a class inherits another class, called single inheritance. 

            For example: Bike class inherits Vehicle class

 class Vehicle {

        int numberOfWheels;

        String color;

        public Vehicle(int noOfWheels, String color){

            this.numberOfWheels = noOfWheels;

            this.color = color;

        }

        public String getColor(){

            return this.color;

        }

    }

 class Bike extends Vehicle{

        public Bike(int noOfWheels, String color){

            super(noOfWheels, color);

        }

    }

    2. Multilevel Inheritance:

            When a class inherits another class which also inherits another class is called multiplevel inheritance. For example if a class C inherits class B and class B inherits class A

class A{

  //properties and fields

}

class B extends A{

    //properties of class B and its fields

}

class C extends B{

    //properies of class C and its fields

}

    3. Hierachical Inheritance:

            When more than one classes inherit a single class, then this type of inheritance is called hierarchical inheritance.

    class Vehicle {

        int numberOfWheels;

        String color;

        public Vehicle(int noOfWheels, String color){

            this.numberOfWheels = noOfWheels;

            this.color = color;

        }

        public String getColor(){

            return this.color;

        }

    }

 class Bike extends Vehicle{

        public Bike(int noOfWheels, String color){

            super(noOfWheels, color);

        }

    }

class Car extends Vehicle{

    boolean hasDisplayScreen = true;

    public Car(int noOfWheels, String color){

        super(noOfWheels, color);

    }

        Here Bike and Car both classes inherit Vehicle class, hence it is an example of hierarchical inheritance.

Note: Java does not support multiple inheritance for classes. To know why: click here

          On the basis of interface- multiple and hybrid inheritance are defined.