Core Java Programming Course- "Final" Keyword

The video tutorial explains the use of the final keyword in Java. It covers how adding final to a variable makes it a constant, preventing its value from being changed. The tutorial also discusses how final can be used in methods to prevent overriding in subclasses, and in classes to prevent inheritance. The video emphasizes the importance of using final to ensure certain elements remain unchanged, providing stability and predictability in code.

What happens when you declare a variable as final in Java?

• It can be changed later.

• It becomes a method.

• It becomes a constant.

• It can be inherited.

What is the effect of marking a method as final in Java?

• It can be inherited.

• It cannot be overridden by subclasses.

• It can be overridden by subclasses.

• It becomes a constant.

Why would you use the final keyword on a method?

• To prevent method overriding.

• To allow method overriding.

• To allow the method to be inherited.

• To make the method a constant.

What is the result of declaring a class as final?

• It can be overridden.

• It can be subclassed.

• It cannot be subclassed.

• It becomes a constant.

What is a characteristic of a final class in Java?

• It becomes a constant.

• It can be overridden.

• It cannot be extended by other classes.

• It can be extended by other classes.