Kotlin Core
Kotlin, developed by JetBrains, is Google's preferred language for Android app development. Master the language under the guidance of its original creators.
Unlock the secrets of Java's low-level mechanisms. Gain practical insights into fault tolerance, high loading, and rare Java features to successfully tackle non-trivial tasks.More details
Certificate of completion (January 25, 2026)
https://hyperskill.org/certificates/3df1636a-8813-4680-8291-136445a8781e.pdfWhat 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 you get a cup of energy; but first, we should teach the machine how to do it.
In this project, you'll program a coffee machine simulator using Java. The machine works with typical products: coffee, milk, sugar, 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.
This project allows you to better understand the basic OOP, its main concepts such as classes, class methods and attributes, and get a taste of Java. Practice working with methods, challenge yourself with loops and conditions, and get more confident with OOP.
User has been actively learning for 154 days and:
Completed481 topics6 projects
Solved2495 problems133 problems of the day
Posted10 comments0 useful links0 hints72 solutions
- 4Project Master
- 13Topic Master
- 10Committed Learner
- 9Brilliant Mind
- 5Sweetheart