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Codestars • over 2 million students worldwide!, Nick Walter, and Rob Percival

Google is now officially supporting Kotlin in Android development. Kotlin is clearly the future for Java. Come learn it in this fun and exciting course.

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Google is now officially supporting Kotlin in Android development. Kotlin is clearly the future for Java. Come learn it in this fun and exciting course.

  • For beginners or experienced programmers - If you are a complete beginner I have a section for you in the course that walks you through Kotlin step by step. If you have had previous programming experience, I have a section titled Kotlin for Programmers that will get you up to speed as quickly as possible.
  • Learn with fully functional projects - I believe in learning by doing, so in this course you will create two Android apps, a command line tool, and Javascript for a website.
  • Challenges to test your learning - As we move through the course I provide challenges that test your new skills and makes sure you're getting the most you can from this course.

If you're looking to make Android apps, command line tools, Javascript, or just want to learn a new programming language, this is the course for you.

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What's inside

Learning objectives

  • Learn kotlin from the ground up
  • Create 2 fully functional android apps
  • Build a command line tool
  • Create javascript code from kotlin
  • Conquer challenges to test your learning

Syllabus

Learn how to get the most out of this course and install the necessary software.
Welcome and Download
Get the Most out of This Course
Our First Line of Kotlin Code
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Traffic lights

Read about what's good
what should give you pause
and possible dealbreakers
Provides a section for complete beginners, walking them through Kotlin step by step, while also offering a section for programmers to get up to speed quickly
Covers Android app development, which is now officially supported by Google with Kotlin, making this course highly relevant for those looking to build Android applications
Teaches how to create Javascript code from Kotlin, which allows learners to reuse their Kotlin code in web development projects, expanding their programming capabilities
Explores Realm and Kotlin integration for data saving, which is a valuable skill for developers looking to build robust and data-driven applications
Includes coverage of Retrofit, a popular library for making network requests, which is essential for building applications that interact with web services and APIs
Requires Android Studio, which may necessitate learners to ensure their machines meet the minimum specifications for running the IDE smoothly, potentially posing a barrier for some

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Reviews summary

Practical introduction to kotlin development

According to learners, this course provides a solid foundation in Kotlin, proving particularly beneficial for those new to the language or transitioning from Java. Students frequently praise the practical approach and highlight the fully functional projects, especially the Android development examples, as a key strength for learning by doing. The course is often described as having clear explanations and a good pace that works well for beginners. However, some feedback indicates that while the introductory sections are strong, certain topics might benefit from more depth or updates to reflect Kotlin's rapid evolution, suggesting it might be less comprehensive for advanced learners or those needing the latest features. Overall, it's widely regarded as a highly valuable starting point for Kotlin development.
Accessible for those new to Kotlin.
"As a complete beginner to Kotlin, I found this course to be an excellent starting point. The pace was just right."
"The beginner section really helped get me up to speed before diving into the projects."
"Good course if you're new to Kotlin or programming, but maybe too slow if you have lots of experience."
"This is perfect as a first Kotlin course. It covers the fundamentals well without being too intimidating."
Concepts are explained simply.
"The instructor explains complex topics in a very clear and easy-to-understand way. Great for beginners."
"I found the explanations of core Kotlin concepts like nullability and functions very clear and concise."
"The lectures break down the material well. It wasn't overwhelming even though I was new to Kotlin."
Learn by building real applications.
"The hands-on coding and projects are the strongest part of the course for me. Building the Android apps helped everything click."
"I appreciate that we built actual projects instead of just doing theory. It made learning Kotlin much more engaging and practical."
"The projects, especially the Android ones, were great for applying what we learned immediately. Felt like I was building something real."
Good intro, but not in-depth.
"While it's a great intro, I wish it went into more advanced topics or best practices for larger applications."
"Provides a solid overview, but you'll likely need other resources for deeper understanding or advanced use cases."
"Felt like it just scratched the surface on some topics. Needed to look elsewhere for more detailed explanations."
Some content could be newer.
"Some parts felt slightly outdated given how fast Kotlin evolves. Could use a refresh on certain libraries or syntax."
"While the core concepts are timeless, some specific implementations or versions shown feel a bit old now."
"Kotlin is changing rapidly; it would be great if the course could be updated more frequently."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in The Complete Kotlin Developer Course with these activities:
Review Java Fundamentals
Solidify your understanding of Java fundamentals, as Kotlin is designed to be interoperable with Java and leverages the JVM. Reviewing Java concepts will make learning Kotlin easier.
Show steps
  • Review basic syntax and data types in Java.
  • Practice writing simple Java programs.
  • Study object-oriented programming principles in Java.
Head First Kotlin
Read 'Head First Kotlin' for a beginner-friendly introduction to the language. This book uses a visual and engaging approach to help you learn Kotlin concepts quickly and effectively.
View Excel Cookbook on Amazon
Show steps
  • Read the book cover to cover.
  • Complete the exercises and activities in the book.
  • Review the key concepts at the end of each chapter.
Simple Command-Line Tool in Kotlin
Start a small project to practice Kotlin syntax and basic programming concepts. Building a command-line tool will reinforce your understanding of variables, functions, and control flow.
Show steps
  • Define the functionality of your command-line tool.
  • Write the Kotlin code to implement the tool's logic.
  • Test and debug your command-line tool.
Four other activities
Expand to see all activities and additional details
Show all seven activities
Kotlin Koans
Work through Kotlin Koans to practice Kotlin syntax and language features. These exercises provide hands-on experience and reinforce your understanding of the language.
Show steps
  • Access the Kotlin Koans online or in your IDE.
  • Complete each Koan by filling in the missing code.
  • Run the tests to verify your solution.
Kotlin in Action
Read 'Kotlin in Action' to gain a deeper understanding of the Kotlin language and its features. This book provides a comprehensive overview of Kotlin and is a valuable resource for learning best practices.
Show steps
  • Read the book cover to cover.
  • Try out the code examples in the book.
  • Take notes on key concepts and features.
Kotlin vs. Java Comparison Guide
Create a comparison guide highlighting the key differences and similarities between Kotlin and Java. This will deepen your understanding of Kotlin's advantages and how it relates to Java.
Show steps
  • Research the key differences between Kotlin and Java.
  • Organize your findings into a clear and concise guide.
  • Include code examples to illustrate the differences.
Contribute to a Kotlin Open Source Project
Contribute to an open-source Kotlin project to gain practical experience and learn from other developers. This will expose you to real-world Kotlin code and help you improve your coding skills.
Show steps
  • Find a Kotlin open-source project on GitHub.
  • Read the project's documentation and contribution guidelines.
  • Identify a bug or feature to work on.
  • Submit a pull request with your changes.

Career center

Learners who complete The Complete Kotlin Developer Course will develop knowledge and skills that may be useful to these careers:
Android Developer
An Android developer specializes in creating applications specifically for the Android operating system. This course is directly applicable for anyone interested in this role, as it focuses on Kotlin, an officially supported language for Android development. The course teaches fundamental concepts, Android Studio, layouts, and the use of web APIs, as well as how to create several full Android apps. The skills and hands-on experience provided in this course will help get a start as an Android developer.
Mobile Application Developer
Mobile application developers create apps for smartphones and tablets, often focusing on either Android or iOS. The Complete Kotlin Developer Course helps build a foundation in Android app development using Kotlin, which is essential for creating Android applications. This course includes learning about Android Studio, layouts, activities, listviews, and accessing web APIs. The course also covers building two fully functional Android apps, offering essential hands-on experience for those wanting to become a mobile application developer.
Application Developer
Application developers are responsible for creating software applications for various platforms. The Complete Kotlin Developer Course is directly relevant for those looking to develop Android applications. The course offers a structured approach to learning Kotlin and practical experience building two complete Android apps. The course helps application developers learn about layouts, activities, web APIs, listviews, and more, building a foundation in mobile dev.
Software Developer
Software developers are responsible for designing, coding, and testing software. This course provides a good starting point for aspiring software developers to learn software development using Kotlin. This course teaches fundamentals of Kotlin, object oriented programming, using classes and functions, and making command line applications, in addition to Android apps. This course helps build a foundation for software development.
Software Engineer
Software engineers design, develop, and maintain software systems. While software engineering covers a wide range of topics and disciplines, this course helps build a foundation in programming principles using Kotlin. The course teaches essential programming logic, command line development, and object oriented programming. This course is suitable for aspiring software engineers because it lays the groundwork for software programming using Kotlin, in addition to providing practical experience with different types of software, such as Android apps and command line tools.
Full-Stack Developer
Full stack developers work with both the front end and back end technologies of web development. This course may be useful for aspiring full stack developers, especially those focusing on the Android ecosystem. While this course's primary focus is on Android app development with Kotlin, it also includes creating Javascript code, which is vital for front end development. The course also teaches how to access web APIs, an important skill for full stack developers who work with back end data.
Backend Developer
Backend developers build and maintain the server-side logic of applications, and they typically work with databases and APIs. While this course focuses on Android development, it also includes working with APIs, building command-line tools, and some experience with Javascript. This course may be useful for anyone who wants to work with Java-centric backends as they learn Kotlin, which is often used with Java and can help build a foundation for further learning. One also can learn how to persist data with Realm, something that backends often do.
JavaScript Developer
A Javascript developer specializes in writing code for web applications and browser-based interactivity. This course offers some introduction to Javascript development by converting some Kotlin code to Javascript. While the course's primary focus is not Javascript, the experience in this course may help someone be a better Javascript developer, particularly if they are interested in learning about different paradigms. If you're interested in broadening your skills, this course might be useful.
Mobile Software Architect
A mobile software architect is responsible for designing the structure of mobile applications, setting technical standards, and overseeing the technical direction of a mobile development team. While this role often requires extensive experience, a course that delves into the details of a language like Kotlin, as well as aspects of the architecture of Android applications, is useful. With this course a mobile software architect can gain a more thorough understanding of the technical details inherent to application builds. This may be useful especially before you take on a more senior role.
Technology Consultant
Technology consultants advise businesses on how to use technology to meet their goals. This course would be useful experience for a technology consultant who wants a better understanding of software development and Android application development. This course may help a technology consultant better understand the development process, which has the potential to improve the quality of their advisement and solutions they recommend to clients. If you are in such a role, this course may benefit you.
Solutions Architect
A solutions architect is responsible for designing technical solutions to business problems, often requiring a broad understanding of software development. While this course concentrates on Android development, it introduces students to the principles of software development using Kotlin and other technologies. A solutions architect may find this course useful as it provides a hands-on experience of key concepts. It can help a solutions architect better understand the design process behind different types of applications.
Technical Project Manager
Technical project managers oversee software projects from start to finish, ensuring their successful completion. This course may be helpful for project managers because it offers practical, hands-on experience with building applications, providing them a richer understanding of the software development process. This course has the potential to make technical project managers better at their jobs by helping them better understand the technical aspects of what their teams do.
Quality Assurance Engineer
Quality assurance engineers test software products to ensure they meet requirements and are free of bugs. This course builds applications using Kotlin, and may give such engineers a deeper understanding of the software development process especially in Android and mobile. This course can be especially helpful for quality assurance engineers who are interested in mobile applications. A deeper understanding of mobile application development enhances the work of quality assurance engineers.
Technical Trainer
A technical trainer educates others on technology and software. This course may be useful for a technical trainer as it provides a practical guide to learning Kotlin, a language used in Android development. The course covers programming fundamentals, Android development, and building different types of software projects. This experience will be helpful for trainers looking to deepen their knowledge for teaching purposes or to develop new courses.
Game Developer
Game developers create video games for various platforms. While this course does not focus on game development directly, the course has value for aspiring game developers who are interested in developing Android games, as it teaches the Kotlin programming language. Kotlin is useful for Android, and this course may help build a foundation that a game developer can then expand upon. The course also provides experience with object oriented programming, a useful skill for game development.

Reading list

We've selected two books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in The Complete Kotlin Developer Course.
Kotlin in Action provides a comprehensive guide to the Kotlin language, covering everything from basic syntax to advanced features. It is particularly useful for Java developers transitioning to Kotlin, as it highlights the similarities and differences between the two languages. valuable resource for understanding Kotlin's design principles and best practices. It is commonly used as a reference by industry professionals.
Head First Kotlin is an engaging and visually appealing introduction to the Kotlin language. It uses a unique, brain-friendly approach to help you learn Kotlin concepts quickly and effectively. is particularly helpful for beginners who are new to programming or who prefer a more interactive learning style. It provides a solid foundation in Kotlin and prepares you for more advanced topics.

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