Value-returning Method

Code:

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public static void main(String[] args) {
               
               
                double cups, ounces;
               
                System.out.println("Enter number of cups");
                cups = getCups(); :wave:
                ounces = CupsToOunces(cups);
                displayResults(cups,ounces);
               
                System.exit(0);
               
        }
               
       

               
               
                public static double getCups(double numberOfCups)
               
                {
                       
               
                       
                        Scanner input = new Scanner(System.in);
                       
                        numberOfCups = input.nextDouble();
                       
                        return numberOfCups;

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Can you guys advise on the method call getCups();.

You do not need to pass in the argument (double numberOfCups) to getCups. You should declare numberOfCups as a double within the method.
You could make the method more resilient. What would happen if the user entered a string (e.g. "Hello") or a negative number?
You could pass the question string "Enter number of cups" as a String argument, check that the user enters a sensible value and return the value if it is, otherwise provide some guidance and ask the question again.

Thank you!