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Congratulations, you just learned how to implement delayed and periodic actions with Vert.x. Vert.x lets you do a lot more. For example, this other playground explains how to create a HTTP endpoint with Vert.x.
If you want to improve this tutorial, submit a PR to https://github.com/cescoffier/techio-playground-vertx-scheduling-tasks. This repository also contains the whole code shown in this tutorial.