Hi,
If OpenJDK is missing, you have to install it first.
A search with Google gave me that :
Haiku Port Project
The Haiku port project is sponsored by the OpenJDK Porters Group, with the bulk of contributors belonging also to the Haiku Java Team.
This project will deliver a complete OpenJDK port to the Haiku operating system.
Once java installed, you will be able to install Ancestris and run it. Francois