Upgrade Time: Choose Java 11+ or the “Other” One…Kotlin
summary
Shows a concrete migration of a Spring Boot 2 service from Java 8/11 to Kotlin using Maven, the kotlin-maven-plugin, kotlin-reflect and the kotlin noarg/jpa compiler plugin; converts POJOs to data classes, replaces Lombok, keeps repositories in Java, adds Kotlin unit tests (Java tests 4 then 6 total after Kotlin), and runs integration tests to prove endpoints still boot and return expected results. Demo exercises Mockito and MockK styles, shows string interpolation, extension functions and sequence vs list evaluation, and reports a working hybrid build with green tests.
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chapters (11)
- 0:00Intro
- 0:48My story with Kotlin
- 2:47Who am I?
- 3:34Highlights Java 9/10/11+
- 4:43Reasons to switch to Kotlin
- 8:19What to keep in mind
- 10:03Let's start!
- 11:20Migration plan
- 12:38Demo
- 35:40Migration plan continued
- 36:00Welcome on board/Outro
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