README.md

Mystery Shack — Java

This small Java console app simulates a checkout experience at “The Dev Group’s Mystery Shack.”
It asks for your name and budget, generates a random receipt ID, creates 3 random item prices, applies a random tax rate, then tells you if you can afford the total (or how much you’re short / what your change is).

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What this program does

1. Prompts the user for:
   • Name
   • Budget
2. Prints a “welcome” message.
3. Generates a random receipt ID and prints it in a receipt format.
4. Generates 3 random item prices (between ~$10 and $50) and prints them.
5. Adds them up to a subtotal.
6. Generates a random tax percent (0%–9%), calculates the final total, and prints it.
7. Compares the final total to your budget and prints either:
   • “You don’t have enough…” + amount needed, OR
   • “You have enough!” + your change

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Files / Classes

Main.java

This is the entry point (main) of the program.

• Creates a CalculateTax object
• Uses a Scanner to collect user input
• Calls methods in this order:
  1. receiptCode(customerName, randomIdCode())
  2. itemPrices() → returns subtotal
  3. itemTax(subTotal) → returns total with tax
  4. canYouAffordIt(total, budget)

RecieptGenerator.java

This class holds most of the “business logic”:

• randomIdCode()

  • Creates a random receipt number from 100 to 999

• receiptCode(String name, int id)

  • Takes the first 2 letters of the name, uppercases them, and prints something like:
    • DE-472

• itemPrices()

  • Generates 3 random item prices (roughly $10–$50)
  • Prints each item and the subtotal
  • Returns the subtotal as a double

• itemTax(double subTotal)

  • Picks a random tax rate from 0 to 9
  • Calculates tax amount and adds it to the subtotal
  • Prints the tax percent and final total
  • Returns the final total as a double

• canYouAffordIt(double total, double budget)

  • If budget < total → prints how much more you need
  • Else → prints your change

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