I am trying to understand NASA world wind java application. The developer guide in the website is not loading saying server down. Anywhere I can get the developer's guide for the java application. If possible, the setup instructions would be helpful as well.
Developer guide for WorldWindJava is hosted on https://goworldwind.org (which seems it was unavailable temporarily). Link mentioned by you actually gets its content for developer guide tab from https://goworldwind.org. It is now available: https://worldwind.arc.nasa.gov/index.html?root=java&javatopic=guide