Core Java Programming Course- "Super" Keyword

The video tutorial explains the concept of the super keyword in object-oriented programming. It demonstrates how the super keyword is used to refer to the superclass's methods and fields, especially in cases of method overriding and field name conflicts. The tutorial uses a practical example involving two classes, Class A and Class B, where Class B extends Class A. It shows how to use the super keyword to call methods and access fields from the superclass, ensuring the correct code execution when there are similar methods or fields in both the superclass and subclass.

What is the primary purpose of the super keyword in Java?

• To denote a superclass

• To rename a class

• To create a new class

• To delete a class

In the context of method overriding, what does the subclass method do?

• It renames the superclass method

• It provides a specific implementation of the superclass method

• It hides the superclass method

• It deletes the superclass method

How can you ensure that a method from the superclass is called instead of the subclass method?

• By using the super keyword

• By using the this keyword

• By using the final keyword

• By using the static keyword

What happens if you do not use the super keyword when calling a method with the same name in both superclass and subclass?

• The program will crash

• The superclass method will be called

• The subclass method will be called

• The method will not be called

When accessing fields with the same name in both superclass and subclass, what does the super keyword do?

• It deletes the field

• It accesses the field from the superclass

• It accesses the field from the subclass

• It renames the field

If a field NUM1 is initialized to 200 in the subclass and 100 in the superclass, what value will be displayed if super.NUM1 is used?

• 100

• 200

• 0

• 300

Why is the super keyword necessary when there is a conflict between similar names in superclass and subclass?

• To rename the conflicting names

• To specify which class's method or field to use

• To delete the conflicting names

• To hide the conflicting names