Java Interview Guide : 200+ Interview Questions and Answers - Access Modifiers - public, private, protected and default

The video tutorial provides an in-depth explanation of Java access modifiers, including private, public, protected, and default. It discusses the visibility and scope of each modifier, emphasizing their use in classes, variables, and methods. The tutorial also includes practical examples to illustrate how these modifiers work in different packages and subclasses, helping viewers understand their application in Java programming.

What is the main characteristic of a class with default access in Java?

• It is accessible only by subclasses.

• It is accessible from any package.

• It is only accessible within the same package.

• It is accessible only within the same class.

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

• It will be accessible only if the class is public.

• It will be accessible without any issues.

• It will cause a runtime error.

• It will cause a compiler error.

Which of the following is true about the private access modifier?

• It allows access from subclasses in different packages.

• It allows access from any class in any package.

• It restricts access to the class where it is declared.

• It allows access from any class in the same package.

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

• Protected access is the same as public access.

• Protected access is only available within the same class.

• Protected access allows visibility in subclasses outside the package.

• Protected access is more restrictive than default access.

Which access modifier allows a variable to be accessed from anywhere in a Java program?

• Default

• Public

• Private

• Protected

In the context of access modifiers, what is the significance of the 'protected' keyword?

• It allows access only from classes in the same package.

• It restricts access to the same class only.

• It allows access from any class in any package.

• It allows access from subclasses and classes in the same package.

In a subclass located in a different package, which access modifiers allow visibility?

• Only public and protected.

• Only public and private.

• Only protected and default.

• Only private and default.