Below is the description of this and super
This:This can be used inside a method and it returns a reference to
the current object on whih the method is being called.
also a property of the current object can be set by this key word
For example if there is a object called Person we can call
this.age = 30 to set the age of the person.
Super : A super keyword can be used to set the properties of the object
of a parent class or it can also be used to call the constructor of super class
from current class.