What distinguishes "final" from "static" in Java?

• A. Final allows changes to variables, while static prevents changes
• B. Static means one copy shared among instances; final means immutability
• C. Final and static serve the same purpose
• D. Static applies to methods only, while final applies to variables only

Answer: (B)

The correct answer highlights that "static" and "final" serve distinct purposes in Java, fundamentally differing in their behavior and usage.

When something is declared as "static," it means that there is only one copy of that member (variable or method) shared among all instances of the class. This means that a static variable retains its value across all instances, and any modification to it will affect all instances of that class. In contrast, "final" signifies that once the variable is assigned a value, it cannot be changed or reassigned, leading to immutability for that variable. Thus, whether an instance of a class or a static context, a final variable cannot be modified after its initial assignment.

By distinguishing between these two concepts, it becomes clear that while "static" pertains to application scope and memory management shared across instances, "final" focuses on ensuring that a variable's value remains constant after its initial assignment, promoting immutability. This essential distinction is what makes the choice regarding the relationship between static and final accurate.