Kotlin Multiplatform, Encounter with the Unknown

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Kotlin Multiplatform, Encountering the Unknown ✨

Kotlin, a multi-paradigm, multi-platform programming language emphasizing safety, simplicity, and interoperability, was first released in February 2016. While initially intended to provide a better alternative to Java, Kotlin has since grown significantly and is now used in a variety of development areas, including Android, desktop, and server-side solutions.

As mentioned earlier, Kotlin is a programming language that supports multiple platforms. Kotlin already runs well on platforms that support the Java Virtual Machine (JVM), and Kotlin Native is available for platforms that don't. Kotlin Native compiles Kotlin into binaries that run on iOS, macOS, Windows, and Linux, and compiles it to JavaScript and HTML for the web. This allows you to build multiplatform applications, from mobile to web, desktop, and server, with a single, shared Kotlin codebase.

In this course, you'll build a complete web application using Kotlin Multiplatform, React, and Spring. Participants will gain an understanding of Kotlin multiplatform projects, and further gain hands-on experience writing shared client and server logic, as well as Kotlin/JS-based React and Kotlin/JVM-based Spring web programming.

The application we'll build together in this course is a to-do management application that allows users to register, edit, complete, or delete tasks. The core domain logic of this application involves defining a to-do model and storing or retrieving that model from storage. Furthermore, you'll need to develop a user interface for manipulating this domain logic through a browser, as well as web and database server logic for processing data.

However, since it would take a huge amount of time to write code from start to finish that satisfies all of the requirements mentioned above, the lecture will proceed by completing code fragments from a template project that has been written in advance.

Kotlin Multiplatform 🤓

Kotlin is a multiplatform language that can be used not only on JVM-based server-side platforms and Android, but also on browsers with JavaScript engines, Node.js, and various native platforms, including iOS, Linux, and Windows. This allows you to build multiplatform applications, spanning mobile, web, desktop, and server platforms, with a single, shared Kotlin codebase.

If you'd like to learn more about Kotlin and Kotlin Multiplatform, you can find it here .

Learning Environment 🖥️

The languages, frameworks, libraries, and tools used in the learning process are as follows:

• Kotlin 1.6.x (with Java 11)
• Share common-code
  • Common Kotlin
  • Kotlin Coroutines
  • Kotlin Serialization
  • Kotlin Logging
  • Kotlin Test
• Client (Front-end)
  • Kotlin/JS
  • React 18.0.x
  • MUI 5.6.x
  • Emotion 11.9.x
  • Ktor 2.0.x
• Server (Back-end)
  • Kotlin/JVM
  • Spring WebFlux 5.2.x
  • Spring Data R2DBC 1.4.x
  • Spring Boot 2.6.x
  • Kotest 5.0.x (with JUnit 5)

Introducing the Knowledge Sharer ✒️

- Introducing SpringRunner .

Spring Runner is a training team that helps you gain the knowledge and experience needed to develop Spring-based applications.

Developing Spring-based applications requires more learning and effort than you might think. You can learn the technical aspects of Spring through books and online training. However, if you try to develop applications solely based on this knowledge, you'll likely feel overwhelmed. This is because, while you may have learned how to use Spring's features, you lack experience developing Spring-based applications.

Spring Runner will help participants learn how Spring works and how to use it in the Spring ecosystem, including Spring Framework and Spring Boot, and then move on to learn Spring-based application programming that can be applied in practice.

SpringRunner is a name created by combining ‘Spring’ and ‘Guide Runner’.