Learn Java from Scratch - A Beginner's Guide - Step 10 - Java Inheritance - Exercise - Student and Employee Classes

The video tutorial covers an exercise on inheritance, focusing on creating an Employee class that extends a Person class. It explains how to add specific attributes to the Employee class and implement a toString method to print all values, including those from the Person class. The tutorial demonstrates using superclass methods and highlights the importance of the super keyword in accessing superclass attributes. The video concludes with a practical implementation of the toString method to ensure all relevant data is printed.

What is the primary purpose of creating the Employee class in this exercise?

• To extend the Person class with additional attributes

• To implement a new interface

• To demonstrate encapsulation

• To practice polymorphism

Which of the following is NOT an attribute of the Employee class?

• Employee grade

• Employer name

• Date of birth

• Title

What is the purpose of the toString method in the Employee class?

• To delete an employee record

• To update the employee's grade

• To print all attributes of the Employee class

• To calculate the salary

How can the Employee class access methods from the Person class?

• By using the 'this' keyword

• By using the 'super' keyword

• By creating a new instance of Person

• By importing the Person class

What is the effect of calling super.toString() in the Employee class?

• It causes a compilation error

• It appends the Employee class details to the Person class details

• It overrides the Employee class's toString method

• It only prints the Employee class details

Why is it important to call the superclass's toString method in the Employee class?

• To increase the performance of the program

• To ensure all inherited attributes are printed

• To simplify the code structure

• To reduce memory usage

Which keyword is used to access the superclass's methods in Java?

• this

• super

• base

• parent