I don't see why not. There is a javac task included with the built-in tasks that ship with boot itself, but boot is designed for ease of extension so you can write tasks to implement your particular workflow. You can even write tasks that use Ant or Maven in a pod (pods are a sort of first-class implementation of isolated classloaders in which work can be done). We even have a jRuby task now that can be used as a component of a Ruby build pipeline, so yes, I think boot would be a great way to build Java projects!