@johannes mentioned here about wanting to port the sunburst view from java swing to the web, I believe with D3. While I have no intention to knock that course of action, I am wondering if https://www.webswing.org/ would be a more straightforward solution?
[I actually first thought of PySimpleGUIWeb, due to the relative ease of use of the library APIs. However, being that the application is *already* written in java swing, I figure that this may be a pretty good solution. All that said, I have no objection to rewriting in D3.]