a. Create a method to calculate the price of a pizza and return it as a double. The method should take at least 3 parameters: Size, toppings, and crust style. Create an app which makes 3 pizzas and describes them at the console.

b. Create a method to validate a coupon code passed to it. The code should be a String and the method should return a double representing the value of the coupon. Pick a few valid codes and assign them each a discount value. Return 0.0 if the code is not valid. Create an app which makes 2 pizzas, one with a valid code and one without, and describes them at the console. GUI in Java

c. Create an app that uses the methods you created in #a and #b. Allow the user to enter values in four text fields for each of the parameters you need (size, toppings, crust style, and coupon code). Display the resulting price.