jmonkeyengine/engine/test-data/Textures/Terrain/Rock/Rock.j3m

Material Rock : Common/MatDefs/Light/Lighting.j3md {
     MaterialParameters {
         Shininess: 16.0
         DiffuseMap : Textures/Terrain/Rock/Rock.PNG
         NormalMap :  Textures/Terrain/Rock/Rock_normal.png
     }
}