FinalFrontier.java

/***************************************
"The Final Frontier" Web Store (Assignment 1)
Author: John Dyer
Class: CS401
Section: Wednesday
Version: 1.0
Date: 9/24/09
Description: Basic simulation of an "online" store with it's theme being the Final Frontier.
****************************************/
import java.util.*;
import java.lang.*;
import java.text.*;

public class FinalFrontier
{
	public static void main(String[] args) {
		// define the variables used to store the user's infomartion and purchases
		// items are set to -1 by default
		String name, state, cc;
		int numTelescope = -1, numShuttle = -1, numTrek = -1, addFreeDisc = -1, freeDiscs = 0, again = 1;
		int shuttlePrice = 50;
		boolean discounts = false;
		double subTotal = 0, total = 0; 
		NumberFormat formatter = NumberFormat.getCurrencyInstance(Locale.US);
		
		// create a Scanner for user input
		Scanner keyboard = new Scanner(System.in);
		
		// start main loop of program (repeats until there are no more customers)
		while(again == 1) {
			name = "";
			state = "";
			cc = "";
			// get some basic information from the user before showing store contents
			System.out.println("Welcome to The Final Frontier Web Store!\n");
			System.out.print("Please enter your name to continue: ");
			name = keyboard.next();
			System.out.print("\nPlease enter your state of residence to continue: ");
			state = keyboard.nextLine();

			// display the menu for the store
			System.out.print("\n\n\n\n\n-------------------------------------------------\n");
			System.out.print("|       Product           |  Price   ------------\n");
			System.out.print("-------------------------------------------------\n");
			System.out.print("|  Mini Hubble Telescope  | $100.00  ------------\n");
			System.out.print("|  Space Shuttle model    | $50.00   ------------\n");
			System.out.print("|  Star Trek Blu-ray      | $20.00   ------------\n");
			System.out.print("-------------------------------------------------\n");
			System.out.println("***Current Discounts***");
			System.out.println("Every 6th Star Trek disc purchased is free");
			System.out.println("***");
			System.out.println("If 2 or more Space Shuttles are purchased,\nthe price is reduced to $40.00 a piece for each model");
			System.out.println("***");
			System.out.println("If the total bill is $200.00 (before tax), take 10% off\n");

			// ask the user how many of each item they would like
			while(numTelescope < 0) {
				System.out.println("How many Mini Hubble Telescopes would you like to purchase?");
				numTelescope = keyboard.nextInt();
			}
			while(numShuttle < 0) {
				System.out.println("How many Space Shuttle models would you like to purchase?");
				numShuttle = keyboard.nextInt();
			}
			while(numTrek < 0) {
				System.out.println("How many Star Trek Blu-ray discs would you like to purchase?");
				numTrek = keyboard.nextInt();
			}

			// check to see if the user would like a free star trek blu-ray
			if(numTrek % 5 == 0 && numTrek != 0) {
				System.out.println("You qualify for an additional Star Trek Blu-ray at no extra charge!");
				System.out.print("Would you like to add one more? (1=yes,2=no) ");
				addFreeDisc = keyboard.nextInt();
			  if(addFreeDisc == 1) {
					numTrek += 1;
				}
			}

			// show the subtotal before any discounts or taxes
			// if no items were selected, no subtotal will be shown
			if(numTelescope > 0 || numShuttle > 0 || numTrek > 0){
				// calculate subtotal
				subTotal = (100 * numTelescope) + (shuttlePrice * numShuttle) + (20 * numTrek);
				System.out.println("\n\nSubtotal: (without discounts) ");
				if(numTelescope > 0) {
					System.out.println("Mini Hubble Telescopes - $100.00x" + numTelescope);
				}
				if(numShuttle > 0) {
					System.out.println("Space Shuttle Models - $50.00x" + numShuttle);				
				}
				if(numTrek > 0) {
					System.out.println("Star Trek Blu-ray discs - $20.00x" + numTrek);
				}
				System.out.println("Your subtotal is: " + formatter.format(subTotal));
			}

			// check for discounts and set the discounts boolean to 1 if any are existing
			if(numTrek > 4 || numShuttle >= 2 || subTotal > 200 || state == "PA"){
				discounts = true;
			}

			// display discounts available if discounts bool == 1 and calculate total
			if(discounts == true) {
				System.out.println("\nDiscounts you qualify for");
				System.out.println("---------------------------");
				if(numShuttle >= 2) {
					System.out.println("Each space shuttle model will only cost you $40.00");
					shuttlePrice = 40;
				}
				if(numTrek >= 5) {
					System.out.println("You qualify for " + (numTrek / 5) + " free Star Trek Blu-ray discs");
					freeDiscs = (numTrek / 5);
				}
				subTotal = (100 * numTelescope) + (shuttlePrice * numShuttle) + ((20 * numTrek) - (20 * freeDiscs));
				// calculate subTotal again with discounts and check to see if the customer
				// qualifies for 10% off their order
				if(subTotal > 200) {
					System.out.println("You qualify for 10% off your entire order");
					subTotal = subTotal - (subTotal * .1);
				}
				if(state == "PA") {
					System.out.println("Because you live in PA, 6% tax was added to your order");
					subTotal += (subTotal * .06);
				}

				// calculate and display final total after discounts and taxes
				System.out.println("\n\nYour total is now: " + formatter.format(subTotal));

			}
			if(subTotal > 0) {
				System.out.println("Please enter your credit card number to complete your purchase: ");
				cc = keyboard.next();
				System.out.println("Thank you for your purchase!");
				System.out.println("Would you like to make another purchase? (1=yes, 0=no) ");
				again = keyboard.nextInt();
			}
		}
		
	}
}