Java Annotation Processing 101

gradle-version: 7.2
java-version: 16

This code provides simple Java Annotation Processor available via
javax.annotation.processing API with Apache Velocity for class creation

Project structure:

java-annotation-processing-101  
├───app 1️⃣ 
└───extention  
    ├───api 2️⃣  
    └───processor 3️⃣

1️⃣ app that uses extention-api and extention-processor
2️⃣ extention-api that provides compile-time annotation @Builder
3️⃣ extention-processor that creates *Builder from Apache Velocity template

⚡ Such project structure separates compile-time annotation API
from javax.annotation.processing implementation (and it's dependencies)

How to run example:

gradlew :app:build
java -jar app/build/libs/app.jar