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In my previous blog post, I introduced Project Lombok, a library that can inject code into a class at compile time. When you see it in action, it almost seems magical. I will attempt to explain the trick behind the magic. Java Compilation To understand how Project Lombok works, one must first understand how Java compilation works. OpenJDK provides an excellent overview of the compilation process.
Project Lombok aims to reduce Java boiler-plate via annotations that perform class transformations at compile time. Project Lombok comes with a decent set of transformations, but you may also want to create your own custom Lombok tranformations. In this blog, I will walk you through the process of extending Project Lombok to do a simple Hello World transformer. What I present here is an approach t
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