Course of Introduction to Kotlin: Your First App

💸 First lesson available without registration!

⚠️ This is NOT the typical course where we introduce theoretical concepts of the language one after another.

In this course, we will do something practical: A console command that connects to an external API. The purpose is to see the main differences of Kotlin with other programming languages.

In this course, you will learn:

• 💻 Prepare your environment to develop with Kotlin: Gradle and Intellij

• 🤜🤛 Kotlin vs Java (for Backend)

• ⚡️ Kotlin playground: learn and test online

• 🚀 Create your first application in Kotlin

• 🙅 Managing nulls in Kotlin

• 🎂 Expand functionality: Calculate your age

• ✴️ Improve your application using Scope functions I

• ✴️ Improve your application using Scope functions II

• ☝️ When to use if and when to use when

• 🔂 Add more functionality to a class without extending from it: Extension functions

• ✅ Add testing to your application

• 🙈 How to mock data in Kotlin using mocks

• ⚡️ Model more comfortably: Data class

• 🫂 Static methods in Kotlin: Companion object

• 🧠 Use the best type of collection: InMemory - Mutable and immutable List and Map

• 🍭 Model constant values using Enums

• 🦭 The best way to model exceptions: Sealed class

• ⚡️ Getting the most out of IntelliJ for Kotlin

• 🐈‍⬛ Calculate the age of our cats

• 😼 Check your cat's breed using the API from thecatapi

• 🍄 Fine-tune your application with blocking coroutines

• 🍄 Improve your application with non-blocking coroutines

• 🤝 Java Kotlin interoperability

• 👵🏼 How to create object mothers in Kotlin

• 🚶‍♀️ Conclusions and next steps