How to save JFrame image as png format?

Question

hello all..
i've encountered some problem while i using my Java3D to load my VRML file & save it in png format.
i've loaded the VRML file in my Java 3D and display it on the JFrame.
now, i want to save the image as PNG format, but i can't save the image, but just save the background & canvas.
here's my code:
Button button = new Button("Save image");
button.addActionListener( new ActionListener()
public void actionPerformed(ActionEvent event)
RenderedImage image = myCreateImage();
// Write generated image to a file
try {
FileDialog fd = new FileDialog(f, "Save as PNG", FileDialog.SAVE);
fd.show();
String name= fd.getFile();
// Save as PNG
ImageIO.write((RenderedImage)image, "png", new File(name));
catch (IOException e) {}
content_pane.add(button, BorderLayout.SOUTH);
try
FileReader fr = new FileReader( "TS.java" );
BufferedReader br = new BufferedReader(fr);
catch(Exception e) {}
pack();
setLocationRelativeTo( null );
setSize(800, 600);
setLocation(0, 40);
setVisible(true);
setBackground(Color.white);
public RenderedImage myCreateImage() {
int width = 800;
int height = 600;
// Create a buffered image in which to draw
BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = bufferedImage.createGraphics();
g2d.dispose();
return bufferedImage;
private void loadFile(String file) {
int flag = VRML97Loader.LOAD_ALL;
if(staticLoad)
flag &= ~VRML97Loader.LOAD_BEHAVIOR_NODES;
VRML97Loader loader = new VRML97Loader(flag);
// if the file is a directory, ignore it
File f = new File(file);
if(f.exists() && !f.isFile()) {
System.out.println("Can't load directories specified");
System.exit(1);
URL url = null;
Scene scene = null;
try {
if(url != null)
scene = loader.load(url);
else
scene = loader.load("vrml/fish.wrl");
} catch(Exception e) {
System.out.println("Exception loading URL:" + e);
e.printStackTrace();
System.exit(0);
urlLabel.setText("File " + file);
if (scene != null) {
// get the scene group
sceneGroup = scene.getSceneGroup();
sceneGroup.setCapability(BranchGroup.ALLOW_DETACH);
sceneGroup.setCapability(BranchGroup.ALLOW_BOUNDS_READ);
sceneGroup.compile();
// add the scene group to the scene
examineGroup.addChild(sceneGroup);
// now that the scene group is "live" we can inquire the bounds
setViewpoint();
// setupBackground(scene);
// setupLighting(scene);

Answer 1

Your g2d is doring nothing!
Indent your code.
class{
   type data1;
   type data2;
   type method(){
       statement;
        clause{
           statement;