Schiffchenspiel - sink the other players’ ships before they sink yours!
Based on an old pen and paper game I played back at elementary school, I built this turn-based multiplayer game for Android. Schiffchenspiel is a mixture of tactics and skill. Move your ships through an island landscape und shoot at enemies by swiping your finger in their direction. How close will you have to come for a save hit? Sink all opponents ships and be the last one standing!
Play with up to 4 players, either over the internet or on the local device. You can also select computer controlled enemies in local game.
The game itself is made with Unity, but the server part is written in Java and running on Google App Engine. So I hope this counts as Java related.
To get an impression of the game watch the video: https://youtu.be/rw2O8m3IElM
Or have a look at the website: http://schiffchenspiel.com/
You can download Schiffchenspiel for free from Google Play Store: https://play.google.com/store/apps/details?id=de.jtrx.schiffchenspiel