Running Form.io

I'm just starting to learn how to code, and I was trying to work with Form.io, but I have some issues with my project.

I'm working on Java with Payara Server running. I have tried to put the form.io in html and jsp files, but none of them worked. I need to use the builder in my project, but the builder does not appear, it's worth say that if I clicked on the file html in my web explorer, chrome does load the builder, so I don't know what is what I'm doing wrong. enter image description here