Inheritance - 

Inheritance- One class can acquire the properties of another class. 

Inheritance promotes the reusability of code 

To inherit from a class, use the extends keyword. 

In Oops there are 5 types of Inheritance- 

Single Inheritance 

Multilevel Inheritance 

Multiple Inheritance 

Hybrid Inheritance 

Hierarchical Inheritance 

Java does not support to Multiple and Hybrid Inheritance. 

Because of Ambiguity problem, we can’t extend’s 2 class at a same time. Instead of multiple inheritance Java support to interfaces and by using interface will implements 2 or more interfaces with in single class by “,” separated. 

Benefits of Inheritance- 

Code reusability 

We can achieve Runtime Polymorphism using Inheritance.