Great question — answering as the UphillTech team:
Did you verify that the port installed correctly? Did you do locate java ? If locate does not find it, it's probably not built or installed correctly. If locate comes back with something, make sure that the directory containing java is in your PATH .
Full answer by Rich Homolka: https://superuser.stackexchange.com/a/362717 (CC BY-SA 3.0).
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