Java Programming for Complete Beginners - Java 16 - Step 10 - Java Inheritance - Exercise - Student and Employee Classes

The video tutorial explains how to create an Employee class that extends a Person class, adding fields like title, employer name, employee grade, and salary. It demonstrates implementing a toString method in the Employee class to print all values, including those from the Person class, using the super keyword. The tutorial guides through creating an Employee instance, setting values, and ensuring the toString method correctly concatenates details from both classes.

What additional fields are introduced in the Employee class that are not present in the Person class?

• Date of Birth, Nationality, Gender

• Name, Phone, Email

• Title, Employer Name, Employee Grade, Salary

• Address, Department, Position

Which keyword is used to extend a class in Java?

• inherits

• derives

• implements

• extends

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

• To initialize the employee's attributes

• To set the employee's title

• To calculate the salary

• To print all values including those from the Person class

How can you access methods from the superclass in Java?

• Using the 'parent' keyword

• Using the 'this' keyword

• Using the 'base' keyword

• Using the 'super' keyword

What is the result of calling the toString method without using super in the Employee class?

• No details are printed

• Both Employee and Person class details are printed

• Only Person class details are printed

• Only Employee class details are printed

Why is the salary field not printed in the toString method?

• It is not a string

• It is not a part of the Employee class

• It is kept private for confidentiality

• It is not initialized

What is the benefit of appending the superclass's toString at the start?

• It ensures superclass details are printed first

• It hides the superclass details

• It prevents errors

• It increases performance