java3d的java类怎么运行异常

我装的 jdk 1.6 java3d的是java3d_plugin.exe  myeclipse 6.0 tomcat 6.0  还有三个 jar包也装了
j3dcore.jar-----vecmath.jar-----j3dutils.jar
我的QQ 183602736 我是做vrml的也做j2ee，但是现在想学习 java3d 希望有前辈能指点指点。
下面是我的程序包
========================
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.GraphicsConfiguration;

import javax.media.j3d.Appearance;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.Material;
import javax.media.j3d.TransformGroup;
import javax.vecmath.Color3f;

import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.Cone;
import com.sun.j3d.utils.universe.SimpleUniverse;

public class SimpleCone extends Applet {

    public BranchGroup createSceneGraph() {
        BranchGroup objRoot = new BranchGroup();

        TransformGroup objTrans = new TransformGroup();
        objRoot.addChild(objTrans);

        Appearance app = new Appearance();
        Material material = new Material();
        material.setEmissiveColor(new Color3f(1.0f, 0.0f, 0.0f));
        app.setMaterial(material);
        Cone cone = new Cone(.5f, 1.0f, 1, app);
        objTrans.addChild(cone);

        objRoot.compile();
        return objRoot;
    }

    public SimpleCone() {
        setLayout(new BorderLayout());
        GraphicsConfiguration config=SimpleUniverse.getPreferredConfiguration();
        Canvas3D c=new Canvas3D(config);
        add("Center", c);
        BranchGroup scene = createSceneGraph();
        SimpleUniverse u = new SimpleUniverse(c);
        u.getViewingPlatform().setNominalViewingTransform();
        u.addBranchGraph(scene);
    }

    public static void main(String[] args) {
        new MainFrame(new SimpleCone(), 256, 256);
    }
}
以下是我报的异常
========================
2010-4-16 16:39:48 javax.media.j3d.NativePipeline getSupportedOglVendor
严重: java.lang.UnsatisfiedLinkError: no j3dcore-ogl-chk in java.library.path
java.lang.UnsatisfiedLinkError: no j3dcore-d3d in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at javax.media.j3d.NativePipeline$1.run(NativePipeline.java:231)
at java.security.AccessController.doPrivileged(Native Method)
at javax.media.j3d.NativePipeline.loadLibrary(NativePipeline.java:200)
at javax.media.j3d.NativePipeline.loadLibraries(NativePipeline.java:157)
at javax.media.j3d.MasterControl.loadLibraries(MasterControl.java:987)
at javax.media.j3d.VirtualUniverse.<clinit>(VirtualUniverse.java:299)
at SimpleCone.<init>(SimpleCone.java:37)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
--------------------编程问答-------------------- 需要安装java3d API

补充：Java ,  Java相关