Question

What are the access modifiers and rank them, also what are the rules with them?

a) Public, Protected, Default, Private; they control the accessibility of classes, variables, and methods in Java
b) Default, Private, Protected, Public; they define the hierarchy of classes in Java
c) Private, Default, Public, Protected; they control the flow of data within methods in Java
d) Public, Private, Protected, Default; they dictate the naming convention of classes and methods in Java

Answer 1

Option a) Public, Protected, Default, Private are the correct access modifiers in Java that control the accessibility of classes, variables, and methods. These modifiers determine how the members of a class can be accessed by other classes and packages.

Step-by-step explanation:

The correct answer to the question is option a) Public, Protected, Default, Private; they control the accessibility of classes, variables, and methods in Java. Access modifiers in Java determine the level of access other classes and packages have to the members of a class, including variables and methods. Here is a brief overview:

• Public: The member is accessible from any other class.
• Protected: The member is accessible within its own package and by subclasses.
• Default (also known as package-private): The member is only accessible within its own package.
• Private: The member is only accessible within its own class.

There are several rules when it comes to using these access modifiers. For example, a class marked as private cannot be accessed from any other class except the one in which it's defined. Conversely, a public class is accessible from anywhere in the application or from other applications.