Code compiles, runs but doesn't display anything, not even Exceptions?

Question

The title just about says it all, but I don't even get a window, why is this? If it's some exception then it's not displaying for me to diagnose. Some pointers in what might be wrong would be really appreciated here - I'm pretty new to Java 3D.
* Test.java
* PrTestf of concept - this class draws a 3D wire-frame model of a BattleZone tank
* @author Mark2
* Created on 10 September 2006, 18:59
package BattleZone;
import java.awt.*;
import java.awt.event.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.*;
import javax.media.j3d.*;
import javax.vecmath.*;
public class Test extends CloseableFrame
public static View myView = new View();
public static GeometryInfo gi;
GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
public Canvas3D canvas3D = new Canvas3D(config);
public SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
public void Test()
    CloseableFrame frame = new CloseableFrame("Proof of Concept");
    setVisible(true);
    MakeUniverse();
    constructView();
public static void main(String args[])
   new Test();
public SimpleUniverse MakeUniverse()
    ViewPlatform myViewPlatform = new ViewPlatform();
    myView.attachViewPlatform(myViewPlatform);
    BranchGroup contentBranchGroup = new BranchGroup();
    simpleU.addBranchGraph(contentBranchGroup);
    simpleU.getViewingPlatform().setNominalViewingTransform();
    MakeSceneGraph();
    return simpleU;
public BranchGroup MakeSceneGraph()
    BranchGroup scene = new BranchGroup();
    populateGraph(simpleU, scene);
    return scene;
private View constructView()
    myView.addCanvas3D(canvas3D);        //NullPointerException
    myView.setPhysicalBody(new PhysicalBody());
    myView.setPhysicalEnvironment(new PhysicalEnvironment());
    return myView;
public static BranchGroup populateGraph(SimpleUniverse simpleU, BranchGroup scene)
    simpleU.addBranchGraph(scene);
    Read_In_Tank_Data();
    return scene;
    public static void Read_In_Tank_Data()
    float[] data = new float[13*3];
    int [] stripCount = {6,7};
    int i = 0;
    //          X               Y                   Z   for each point in the polygon
                                   //Draw near view first
    data[i++]= -1.0f; data[i++]= -1.0f; data[i++]= 0.0f;    //1     Back right corner of base
    data[i++]= -1.5f; data[i++]= -0.5f; data[i++]= 0.0f;
    data[i++]= -1.0f; data[i++]= 0.0f; data[i++]= 0.0f;
    data[i++]= +2.0f; data[i++]= 0.0f; data[i++]= 0.0f;     //Draws base
    data[i++]= +3.0f; data[i++]= -0.5f; data[i++]= 0.0f;     //Forward most point
    data[i++]= +2.5f; data[i++]= -1.0f; data[i++]= 0.0f;     //6
    data[i++]= -1.0f; data[i++]= 0.0f; data[i++]= 0.0f;     //Draw top and turret
    data[i++]= 0.0f; data[i++]= +1.0f; data[i++]= 0.0f;     //Highest point - Antanae array on top of here
    data[i++]= +0.5f; data[i++]= +0.75f; data[i++]= 0.0f;
    data[i++]= -+2.0f; data[i++]= +0.75f; data[i++]= 0.0f;     //10
    data[i++]= +2.0f; data[i++]= +0.5f; data[i++]= 0.0f;
    data[i++]= +1.0f; data[i++]= +0.5f; data[i++]= 0.0f;
    data[i++]= +2.0f; data[i++]= 0.0f; data[i++]= 0.0f;     //13
                                   //Draws far view same as front but with -1 Z values
    data[i++]= -1.0f; data[i++]= -1.0f; data[i++]= -1.0f;         //Back left corner of base
    data[i++]= -1.5f; data[i++]= -0.5f; data[i++]= -1.0f;     //15
    data[i++]= -1.0f; data[i++]= 0.0f; data[i++]= -1.0f;
    data[i++]= +2.0f; data[i++]= 0.0f; data[i++]= -1.0f;     //Draws base
    data[i++]= +3.0f; data[i++]= -0.5f; data[i++]= -1.0f;     //Forward most point
    data[i++]= +2.5f; data[i++]= -1.0f; data[i++]= -1.0f;
    data[i++]= -1.0f; data[i++]= 0.0f; data[i++]= -1.0f;     //20      Draw top and turret
    data[i++]= 0.0f; data[i++]= +1.0f; data[i++]= -1.0f;     //Highest point - Antanae array on top of here
    data[i++]= +0.5f; data[i++]= +0.75f; data[i++]= -1.0f;
    data[i++]= -+2.0f; data[i++]= +0.75f; data[i++]= -1.0f;
    data[i++]= +2.0f; data[i++]= +0.5f; data[i++]= -1.0f;
    data[i++]= +1.0f; data[i++]= +0.5f; data[i++]= -1.0f;     //25
    data[i++]= +2.0f; data[i++]= 0.0f; data[i++]= -1.0f;     //26
    //Need some connecting lines to make a whole object.
    GeometryInfo gi = new GeometryInfo(GeometryInfo.POLYGON_ARRAY);
    gi.setCoordinates(data);
    gi.setStripCounts(stripCount);
    NormalGenerator ng = new NormalGenerator();
    ng.generateNormals(gi);
    gi.recomputeIndices();
    Stripifier st = new Stripifier();
    st.stripify(gi);
    gi.recomputeIndices();
    createWireFrameAppearance();
public static Appearance createWireFrameAppearance()
    Appearance materialAppear = new Appearance();
    PolygonAttributes polyAttrib = new PolygonAttributes();
    polyAttrib.setPolygonMode(PolygonAttributes.POLYGON_LINE);
    materialAppear.setPolygonAttributes(polyAttrib);
    return materialAppear;
}

Answer 1

Its because your public void Test() should be public Test(). Its a constructor, not a method.