Inheritance :

Inheritance is one such concept where the properties of one class can be inherited by the other. It helps to reuse the code and establish a relationship between different classes.

In Java, there are two classes:

• Parent class ( Super or Base class)
• Child class (Subclass or Derived class )

A class which inherits the properties is known as Child Class whereas a class whose properties are inherited is known as Parent class.

Inheritance defines IS-A relationship between a Super class and its Sub class. extends and implements keywords are used to describe inheritance in Java.

Inheritance is further classified into 4 types:

• Single Inheritance 
• Multilevel Inheritance
• Multiple Inheritance
• Hierarchical Inheritance
• Hybrid Inheritance

Note : Multiple inheritance is not supported in java

1.Single Inheritance :

2.Multilevel Inheritance:

3.Multiple Inheritance : 

Having more than one Parent class at the same level is called multiple inheritance.

• Any class can extends only one class at a time and can’t extends more than one class simultaneously hence java won’t provide support for multiple inheritance.
• But an interface can extends any number of interfaces at a time hence java provides multiple inheritance support through interfaces.

4.Hierarchical Inheritance :

5.Hybrid Inheritance :