Try CoffeeMachine.java file in your IDE.
What can be better than a cup of coffee during a break? A coffee that you don’t have to make yourself. It’s enough to press a couple of buttons on the machine and get a cup of energy.
The machine works with typical products: coffee, milk, water, and plastic cups; if it runs out of something, it shows a notification. You can get three types of coffee: espresso, cappuccino and latte. Since nothing’s for free, it also collects the money.