From Spring Boot 1 in Java to Spring Boot 2 in Kotlin

on YouTube ↗02h 14m

" summary

Live-coding shows a Java Spring Boot 1 blog app converted to Kotlin on Spring Boot 2 / Spring Framework 5 using Spring Data Kay, with domain types turned into data classes (immutable properties), use of copy() to update instances, top‑level functions and extension methods replacing utility classes, Mustache view DTOs for formatted dates, and migrated tests that run green. Migration covers blocking Spring MVC and reactive WebFlux: reactive repositories returning Flux/Mono, a WebClient client example, server‑sent events and a functional router DSL — all demonstrated working.

AI-written summary · about

" chapters (20)

1. 0:00Introduction
2. 0:35Context
3. 1:20Migration from Java to Kotlin
4. 1:45Spring Boot 2 in Kotlin
5. 2:00Spring Web Flex
6. 2:52Blog Post Application
7. 3:08Application Overview
8. 4:00Migrating to Kotlin
9. 5:55Dependencies
10. 7:51Kotlin vs Java
11. 16:08Kotlin to Spring Boot
12. 18:48Type inference
13. 23:17If statements
14. 25:55Spring Plugin
15. 28:47Migration to Kotlin
16. 29:41Kotlin Top Level Functions
17. 33:30Kotlin Extension Functions
18. 39:47Importing Extension Functions
19. 45:30Mustache
20. 47:30Data class

" related talks

• 45mWhy Spring Loves KotlinSebastien Deleuze · KotlinConf 2017
• 01h 05mWhy Spring Loves KotlinSebastien Deleuze · SpringOne Platform 2017
• 44mKotlin and Spring Boot, a Match Made in HeavenNicolas Fränkel · KotlinConf 2018
• 48mSpringing into KotlinMark Heckler · Jfokus 2018
• 52mSpring into Kotlin: How to Make the Magic even more MagicalMark Heckler · Riga Dev Days 2019
• 46mFunctional web applications with Spring and KotlinSebastien Deleuze · Spring I/O 2017
• 43mSpring Boot with Kotlin, Kofu and CoroutinesSebastien Deleuze · Spring I/O 2019
• 59mSpring into Kotlin: How to Make the Magic even more MagicalMark Heckler · Voxxed Days Bucharest 2018