Java tutorial
package com.badlogic.gdx.physics.bullet.demo; import com.badlogic.gdx.Game; import com.badlogic.gdx.Screen; import com.badlogic.gdx.physics.bullet.demo.screens.DemoScreen; import com.badlogic.gdx.utils.GdxNativesLoader; public class BulletDemoDesktopApplication extends Game { public BulletDemoDesktopApplication() { } @Override public void create() { // Preload the natives so we can use them in static class initialization GdxNativesLoader.load(); final Screen playScreen = new DemoScreen(this); setScreen(playScreen); } }