Jme -ttf error

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package Test;

/**
 *
 * @author Administrator
 */
import com.atr.jme.font.TrueTypeFont;
import com.atr.jme.font.TrueTypeMesh;
import com.atr.jme.font.asset.TrueTypeKeyMesh;
import com.atr.jme.font.asset.TrueTypeLoader;
import com.atr.jme.font.shape.TrueTypeContainer;
import com.atr.jme.font.util.StringContainer;
import com.atr.jme.font.util.Style;
import com.jme3.app.SimpleApplication;
import com.jme3.math.ColorRGBA;




/**
 * 测试TTF字体
 * 
 * @author icyboxs
 *
 */
public class HelloTTF extends SimpleApplication {

	public static void main(String[] args) {
		// 启动程序
		HelloTTF app = new HelloTTF();
		app.start();
	}


	@Override
	public void simpleInitApp() {
            assetManager.registerLoader(TrueTypeLoader.class, "ttf");

            TrueTypeKeyMesh ttk = new TrueTypeKeyMesh("Interface/heiti.ttf",
                Style.Plain, 16);
            
            TrueTypeFont ttf = (TrueTypeMesh)assetManager.loadAsset(ttk);

            TrueTypeContainer ttc = ttf.getFormattedText(new StringContainer(ttf, "Hello\nWorld"), ColorRGBA.Blue);
            rootNode.attachChild(ttc);

	}

}
java.lang.NoClassDefFoundError: com/google/typography/font/sfntly/FontFactory
	at com.atr.jme.font.asset.TrueTypeLoaderMesh.load(TrueTypeLoaderMesh.java:38)
	at com.atr.jme.font.asset.TrueTypeLoader.load(TrueTypeLoader.java:41)
	at com.atr.jme.font.asset.TrueTypeLoader.load(TrueTypeLoader.java:35)
	at com.jme3.asset.DesktopAssetManager.loadLocatedAsset(DesktopAssetManager.java:272)
	at com.jme3.asset.DesktopAssetManager.loadAsset(DesktopAssetManager.java:388)
	at Test.HelloTTF.simpleInitApp(HelloTTF.java:46)
	at com.jme3.app.SimpleApplication.initialize(SimpleApplication.java:240)
	at com.jme3.system.lwjgl.LwjglAbstractDisplay.initInThread(LwjglAbstractDisplay.java:139)
	at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:221)
	at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.ClassNotFoundException: com.google.typography.font.sfntly.FontFactory
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
	... 10 more

jME-TTF depends upon Google’s Sfntly library available at GitHub - rillig/sfntly: A Library for Using, Editing, and Creating SFNT-based Fonts
My fault I left that sentence out…:frowning: