#49 Single and Multilevel inheritance in java

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In this lecture we will learn:
- Types of inheritance in Java
- Single inheritance in Java
- Multilevel inheritance in Java
- Examples related to single and multilevel inheritance
Single Inheritance:-
- In single inheritance, subclasses inherit the features of one superclass.
- Only one parent class exists in single inheritance.
- It is when there are only two classes.
e.g.,
Calc class inherits the properties of AdvCalc class.
Here, Calc - child class
AdvCalc - parent class
Multi-level inheritance:-
- In Multilevel Inheritance, a derived class will be inheriting a base class, and as well as the derived class also acts as the base class for other classes.
- More than one parent class exists in multilevel inheritance.
- It is when we have multiple layers in between the classes.
e.g.,
Calc class inherits the properties of AdvCalc and further AdvCalc inherits the properties of VeryAdvCalc.
Here, Calc - child class
AdvCalc - parent class of Calc & child class of VeryAdvCalc
VeryAdvCalc - parent class of both other classes
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[@RamSingh-xg9bq]

Nice explanation sir😊

[@dProfessor_]

SUPERB

[@MajorPickleSwag]

Since the Calc class inherits from the Object class, doesn't that mean single-level inheritance only applies to Calc -> Object? That would mean AdvCalc -> Calc -> Object is the beginning of multi-level inheritance from those series of classes.

[@ahmedry6389]

You too good buddy

[@pankajsinghpatwal]

❤❤

[@kvelez]

public class Main{ public static void main(String[] args) { SciCalc obj = new SciCalc(); System.out.println(obj.add(8, 3)); System.out.println(obj.mult(8, 3)); System.out.println(obj.sub(4, 9)); System.out.println(obj.div(4, 9)); System.out.println(obj.powered(7, 2)); } } class Calc{ public int add(int n1, int n2){ return n1 + n2; } public int sub(int n1, int n2){ return n1 - n2; } } class Advanced extends Calc{ public int mult(int n1, int n2){ return n1 * n2; } public int div(int n1, int n2){ return n1 / n2; } } class SciCalc extends Advanced{ public double powered(int n1, int n2){ return Math.pow(n1, n2); } }

[@AYANKHAN-sp6qq]

systum