Kotlin annotation processor

Why Kotlin annotation processor is called Kapt? Here’s the interesting story.→ Back in the days, when Kotlin was pretty new, it was lacking a support for annotation processing.→ But annotation processing is the essential for JVM languages, so they had to do something.→ Back in 2015, Java 8 was relatively new (launched in 2014) so the most popular java annotation processor in JDK 7 was called Annotation processing tool (apt).→ As Kotlin team had to add annotation processing support, they created a (sort of) wrapper around “apt” tool for Kotlin, and called it “kapt”. This is how Kapt was born.??Bonus:Later, as Java 8 became popular, it replaced “apt” with an advance Processor, part of “javax.annotation.processing” package.Kotlin Kapt is now also replaced with advance, Kotlin specific annotation processor called “Kotlin symbol processor” or “ksp”.PS: All relative links are in comments.#android #kotlin #java