Answer to Question #134761 in Python for Elizabeth

Question

Discuss the concept of parameters. What are parameters for? What is the difference between formal parameters and actual parameters? Give an example in Java code that illustrates formal parameters and actual parameters.

Answer 1

Parameters are used to pass data to the method.

This allows to call same method with different values of data.

Actual parameters - variables or values passed to the method while calling.

Formal parameters - variables declared in method signature (between parentheses).

public double myFunction(int a,double b)// int a, double b - formal parameters of the myFunction method
{
//do something
}

public static void main(String[] args) {

myFunction(5, 3.14); // 5, 3.14 - actual parameters of the myFunction method

}