Introduction to Kotlin - Workshop
- 1. INTRODUCTION TO KOTLIN SYTAC - SLAB Shaun Thomas shaunthomas999@gmail.com www.shaunthomas999.com
- 2. WHY ARE YOU HERE?
- 3. SUPPORT IN INTELLIJ IDEA PROGRAMMING LANGUAGE FROM JETBRAINS
- 4. OFFICIAL SUPPORT FOR ANDROID DEVELOPMENT Google I/O 2017
- 6. GRADLE SUPPORT Ø Use Kotlin for writing Ø Gradle Script Kotlin (build.gradle.kts) Ø Plugins Ø Benefits Ø auto-completion and content assist Ø quick documentation Ø navigation to source Ø refactoring https://blog.gradle.org/kotlin-meets-gradle https://github.com/gradle/kotlin-dsl
- 7. INTERESTING FACTS Started development in 2010 at Jetbrains Open sourced in 2012 First official stable release v1 - Feb 15, 2016 (current release v1.1.4 – Aug 15, 2017) Used in all Jetbrains IDEs 100% interoperable with Java Syntax is similar to Swift Influenced by Java, Scala, Groovy, C#, Gosu, JavaScript, Swift
- 8. TIME FOR “HELLO WORLD!” Hands-on
- 10. Android JVM Browser Native Kotlin • App development • Use Java 8 features with Java 6 (highest supported ver.) • Wrapper for Java • Alternative to other JVM languages Wrapper for Javascript Native code generation for different platforms incl. iOS LANDSCAPE
- 12. VISIBILITY MODIFIERS Top level declarations (classes, functions, properties …) Modifier Visibility Public (default) world Private file Internal module Members inside a class Modifier Visibility Public (default) world Private class Protected class and sub-class Internal module
- 14. DATA TYPES & CONTROL FLOWS Walk through
- 16. SAMPLE CODE GITHUB REPO https://github.com/shaunthomas999/kotlin-workshop
- 17. CODING EXERCISE - 01 Hands-on
- 19. CODING EXERCISE - 02 Hands-on
- 21. CODING EXERCISE - 03 Hands-on
- 22. SAMPLE SPRING-BOOT APPLICATION WITH SPRING-DATA-REST Walk through https://github.com/shaunthomas999/spring-boot-data-rest-sample
- 23. CREATE PROJECT Go to http://start.spring.io/
- 24. LET’S WORK ON THE EXERCISE NOW Hands-on
- 26. ØGeneral syntax <keyword> <name>: <Type> ØThere is no ‘new’ operator in Kotlin Ø By default Kotlin classes, properties and functions are public and final Ø Everything is an object in Kotlin Ø Numbers, charcters and boolean can have primitive values at runtime Ø main() should not be inside a class