Selenium WebDriver with Java - Basics to Advanced and Frameworks - Difference Between Public and Private Modifiers with

The video tutorial explains the different access modifiers in programming: private, protected, default, and public. It highlights how private modifiers restrict access to methods and variables within the same class, while protected modifiers allow access in subclasses and within the same package. The tutorial uses real-world examples, such as securing credit card details, to illustrate the importance of using private modifiers. It also compares the access levels of default, protected, and public modifiers, demonstrating their practical applications in coding environments like Eclipse.

What is the main characteristic of a private access modifier in Java?

• It restricts access to the same class only.

• It allows access from subclasses.

• It allows access from any class.

• It allows access within the same package.

Why might a developer choose to use a private access modifier for certain variables?

• To allow access from any package.

• To ensure the variables are accessible from subclasses.

• To prevent unauthorized access to sensitive data.

• To make the variables accessible from the same package.

Which access modifier allows access to methods and variables within the same package?

• Public

• Private

• Default

• Protected

What is a key feature of the protected access modifier?

• It allows access from any class in any package.

• It allows access only within the same package.

• It allows access only within the same class.

• It allows access in subclasses and within the same package.

How does the protected access modifier differ from the default access modifier?

• Protected restricts access to the same class only.

• Protected allows access from any class in any package.

• Protected allows access in subclasses outside the package.

• Protected allows access only within the same package.

Which access modifier would you use to ensure a method is accessible from any class?

• Default

• Protected

• Private

• Public

What happens if you try to access a default method from a class in a different package?

• It will be accessible if the class is a subclass.

• It will throw an error.

• It will be accessible if the method is public.

• It will be accessible.

In what scenario is a protected access modifier most useful?

• When you want to allow access only within the same package.

• When you want to allow access in subclasses across packages.

• When you want to allow access from any class.

• When you want to restrict access to the same class.

Which access modifier should be used for a method that needs to be accessed by subclasses in different packages?

• Private

• Default

• Protected

• Public

What is the primary purpose of using access modifiers in Java?

• To enhance code readability.

• To control the visibility and accessibility of classes, methods, and variables.

• To improve code performance.

• To simplify code structure.