You can convert the model to the Java XML Format.
It's actually quite easy, and with Blender you can make it tons easier by using an addon plugin called "Blend2Java"
First things first, make your model. I will be making a tutorial on that later, this is just for the conversion of your model.
For a test, maybe just use the original cube.
Now, export it into a Wavefront format (.obj)
After, open up the Converter software you have downloaded and installed.
Then hit File>Batch Convert
Now, you have to find the .xml format, its some weird name at the bottom i will have it int he screenshot. It took me forever to find.
Then hit convert and you are done!