The super keyword

In general, when people inherit properties from a different class, there might be a redundancy if the same variable names are used in both the parent and child class. To differentiate between parent variables and child variables, we use the super keyword.

Let's explain this using an example. Let's create two classes and name them childDemo and parentDemo. In the parentDemo class, we define a string called name and assign the 'rahul' string to it.

Now, in the childDemo class, we inherit the properties of parentDemo. We know how to inherit the properties of a parent class using the extends keyword, which we learned inChapter 5, Everything You Need to Know About Interfaces and Inheritance. The code to inherit the properties is given here:

public class childDemo extend parentDemo{

In this code, childDemo is taking the properties of parentDemo.

Add a string in the childDemo class, call it name, and assign the QAClickAcademy string to it. We then define a method called public void...