I found this solution and it worked for me on (LWJGL2) OS X - MacBook Pro;
public static void main(String[] args) {
GraphicsDevice device = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();
AppSettings setting = new AppSettings(true);
setting.setFullscreen(true);
setting.setFrameRate(60);
setting.setFrequency(device.getDisplayMode().getRefreshRate());
HelloTerrain app = new HelloTerrain();
app.setShowSettings(false);
app.setSettings(setting);
app.start();
}