Youtube: https://www.youtube.com/channel/UCGEKILGmI9zSn6nRfkrbblw?view_as=subscriber Github: https://github.com/Soba-Arjun/ Slideshare: https://www.slideshare.net/ARJUNSB/

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Inheritance
 It is an important pillar of OOPs concept.
 It is the mechanism in java by which one class allow to inherit the features of another
class.
Important terminology:
 Super class
 Sub class
 Reusability
parent
Child 1 Child 2

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Inheritance
public class Test
{
public static void main(String
args[])
{
B obj=new B();
obj.add(10,20);
obj.sub(10,20);
}
}
class A
{
public int c;
public add(int a, int b)
{
c=a+b;
System.out.println©;
}
}
class B extends A
{
public sub(int a, int b)
{
c=a-b;
System.out.println©;
}
}
30
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Inheritance Types
 Below are the different types of inheritance which is supported by Java.
 Single inheritance
 Multilevel inheritance
 Hierarchical inheritance
 Multiple inheritance – Does not supported by Java.
 Hybrid inheritance

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Single Inheritance
 Subclass inherits the features of
one super class.
class one {
public void hello() {
System.out.println(“Hello");
}
}
class two extends one {
public void world() {
System.out.println(“world");
}
}
public class Main {
public static void main(String[] args){
two g = new two();
g.hello();
g.world();
}
}

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Multilevel Inheritance
 A derived class will be inheriting
a base class and as well as the
derived class also act as the base
class to other class.

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Hierarchical Inheritance
 One class serves as a super class(base class) for more than one sub classes (derived classes)

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Multiple Inheritance
 Java Doesn’t support
multiple inheritance.
 Instead of that, it support
interface.

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Hybrid Inheritance
 Combination of interface
and inheritance.