Quiz 1 - Coffee Shop Calculator

Duration: 30 minutes
Total Points: 100 points
Open Book: You may reference lab materials and solutions

Scenario

You’re helping your friend manage their new coffee shop! Create a program that handles customer orders, calculates prices, and provides daily reports.

The Program: Coffee Shop Manager (100 points)

Write a complete Java program called CoffeeShop.java that performs the following tasks:

Part 1: Customer Welcome (15 points)

• Ask for the customer’s first and last name
• Create a personalized greeting: “Welcome to Java Beans, [Full Name]!”
• Count the total number of letters in their full name (no spaces)
• Display: “Your loyalty number is: [letter count]“

Part 2: Menu and Ordering (25 points)

• Display this menu:

  1. Coffee - $3.50
  2. Tea - $2.25
  3. Muffin - $4.00
  4. Sandwich - $6.75
• Ask the customer to select an item by number (1-4)
• Use a switch statement to display their selection and price
• Ask how many of that item they want
• Calculate and display the subtotal

Part 3: Discount Calculation (25 points)

• If the loyalty number (from Part 1) is:
  • Even number: Apply 10% discount
  • Odd number greater than 10: Apply 5% discount
  • Otherwise: No discount
• Calculate the discount amount and final total
• Display all amounts with 2 decimal places using printf

Part 4: Payment Processing (20 points)

• Ask the customer how much money they’re paying
• Calculate the change needed
• If they don’t pay enough, keep asking for more money until the total is covered
• Display the change in a formatted way

Part 5: Daily Summary (15 points)

• Ask if this is order number 1, 2, or 3 of the day
• Use a switch statement to display:
  • Order 1: “First customer of the day!”
  • Order 2: “Morning rush!”
  • Order 3: “Lunch time!”
  • Default: “Busy day ahead!”

Sample Run:

=== JAVA BEANS COFFEE SHOP ===
Enter your first name: Sarah
Enter your last name: Johnson
Welcome to Java Beans, Sarah Johnson!
Your loyalty number is: 11

MENU:
1. Coffee - $3.50
2. Tea - $2.25  
3. Muffin - $4.00
4. Sandwich - $6.75

Select item (1-4): 1
You selected: Coffee ($3.50)
How many would you like? 2
Subtotal: $7.00

Loyalty discount (5%): -$0.35
Final total: $6.65

Enter payment amount: $10.00
Your change: $3.35

What order number is this today (1-3)? 1
First customer of the day!

Thank you for visiting Java Beans!

Grading Criteria:

• Part 1 - Customer Welcome (15 points): String concatenation, character counting
• Part 2 - Menu and Ordering (25 points): Switch statement, basic calculations
• Part 3 - Discount Calculation (25 points): If/else logic, printf formatting
• Part 4 - Payment Processing (20 points): While loop for insufficient payment
• Part 5 - Daily Summary (15 points): Additional switch statement usage

Technical Requirements:

• Use Scanner for all input operations
• Apply string concatenation and length operations
• Use switch statements for menu selection and daily summary
• Implement if/else statements for discount logic
• Use while loop for payment validation
• Apply printf for monetary formatting (2 decimal places)
• Perform basic arithmetic calculations
• Close Scanner when finished

Tips for Success:

• Start simple: Get basic input/output working first
• Use the labs: Similar examples exist in your lab materials
• Test as you go: Run your program after completing each part
• Focus on the format: Make sure your output matches the sample
• Double-check math: Verify your discount and change calculations

Concepts Covered:

This quiz combines concepts from all three labs:

• Lab 1: Basic I/O, string operations, simple calculations
• Lab 2: Switch statements, if/else logic, printf formatting
• Lab 3: Loops, input validation, mathematical operations

The key is applying these familiar concepts to a new, realistic scenario!

Time Management:

• 5 minutes: Planning and understanding requirements
• 20 minutes: Implementation (4 minutes per part)
• 5 minutes: Testing and fixing bugs

Good luck! ☕