What is a local variable?

• A. A variable declared within a class.
• B. A variable declared within a method.
• C. A variable defined as static in a class.
• D. A variable accessible across multiple classes.

Answer: (B)

A local variable is defined as a variable that is declared within a method. This means that its scope is limited to the method in which it is created. Once the execution of the method is complete, the local variable is destroyed and cannot be accessed outside of that method. This limited scope ensures that local variables can help manage memory usage effectively and avoid potential naming conflicts with other variables that might exist elsewhere in the program.

In contrast to local variables, a variable declared within a class, but outside of any method, would generally be referred to as an instance or class variable, depending on whether it is associated with an instance of the class or the class itself. A static variable, which is referenced in another option, retains its value across different instances of a class and belongs to the class rather than to any individual object. Lastly, a variable accessible across multiple classes would be an instance variable or perhaps a class variable marked as public, emphasizing a broader scope than that of a local variable. Therefore, the characteristics and scope of a local variable distinctly align with the definition provided in the correct choice.