http://interstellar.i2p/guides/how2eepsite
Then, for your pleasure, click on it then “Address registration line” . This will prompt you to claim your very own .i2p domain, as well as publishing it to the [reg] .i2p registration service.
It should be fairly easy for the Java I2P, go to your tunnel manager (if using I2P+, it is at plain sight) ,
and create a new HTTP server.