To install this (on Windows) unzip the contents of the attached zipfile into the following directory:
You can then access this as (changing your hostname and port as required):
Once you are familiar with this minimalist application, you will want to explore the bundled Fusion templates stored at:
... probably starting with the "learn" template.
These provide much more insight into the use of the flexible Jx library for layout, and how to create a proper template that can be used in future GUI application definition builders.