Challenge: Processing a Coffee Order

You'll simulate how a coffee shop processes an order from start to finish — from the moment it is placed, to how it is displayed on a final receipt.

You'll work with string immutability, manipulation, and formatting to build a realistic order flow.

1. Create 3 variables with the following exact values:
   • drinkName ("Latte")
   • quantity (2)
   • price (3.5f)
2. Simulate a change in the order by updating the drink name from "Latte" → "Cappuccino" (this represents how the original string is replaced, not modified).
3. Convert the updated drink name to uppercase using toUpperCase(), as receipts display product names in a standardized format.
4. Create a formatted receipt message using String.format() that includes:
   • product name
   • quantity
   • price per item (1 decimal place)
5. Check whether the final receipt message is empty using isEmpty() and store the result in a boolean variable.
6. Print all results. Output should be as follows:

Original order: Latte
Updated order: Cappuccino
Formatted receipt: Product: Cappuccino | Quantity: 2 | Price: 3.5
UPPERCASE PRODUCT: CAPPUCCINO
Receipt is empty: false