Java has many way to embed variables into String for formatting. But none of these were really satisfying. Java developers have been screaming for a decent String interpolation for years. And in Java 21 we got just that in the form of Templates. But as was to be expected from the language designers, this was not just a quick fix. It comes with a thorough API that developers can leverage to create their own implementations.

In this session I will not only explain benefits of the new templating system, I will also code a custom implementation of that API to show the audience what the enormous possibilities are. All this will be done in a live coding session.