What are expressions, variables, or constant values in a method call known as?

Actual parameters refer to the expressions, variables, or constant values that are passed to a method when it is called. These are the real values that are supplied to the method's parameters during execution. For instance, in a method call like calculateArea(5, 10), the numbers 5 and 10 are the actual parameters being passed to the method.

In contrast, formal parameters are the variables defined in the method signature that act as placeholders for the actual parameters, receiving their values when the method is invoked. Local parameters typically refer to variables that are declared within a specific method and are only accessible within that method. Method return types specify the type of value that a method will return when it has completed its execution.

Understanding the distinction between actual and formal parameters is crucial, as it highlights how data is transferred into methods and utilized within them.