Strange pb with image

Question

With this code :
boardImage = createImage(view.width, view.height);
try {
BufferedImage bi = ImageIO.read(new File(boardImg));
boardGraph = boardImage.getGraphics();
boardGraph.drawImage(bi, 0, 0, null);
I've got sometimes a blank image, I stop my prg and launch it again and all is good.
Any idea ?
I use jdk 1.6 (u3)
Edited by: clechenne on Nov 28, 2007 1:22 PM

Answer 1

With this example, I can see my image a few secs :-(
public class Gui extends JPanel {
     private JPanel bv;
     private JFrame frame;
     /** For displaynig msg. */
     private JLabel hintBar = new JLabel(" ");
      * The <code>JPanel</code> containing the main display area.
     private JPanel panMain = new JPanel(new BorderLayout());
     public Gui() {
          super(new BorderLayout());
      * Lays out the frame by setting this Client object to take up the full
      * frame display area.
     private void layoutFrame() {
          frame.getContentPane().setLayout(new BorderLayout());
          frame.getContentPane().add(this, BorderLayout.CENTER);
          hintBar.setBorder(BorderFactory.createLoweredBevelBorder());
          hintBar.setForeground(Color.RED);
          frame.getContentPane().add(hintBar, BorderLayout.SOUTH);
          frame.validate();
     public void initialize() throws IOException {
          frame = new JFrame("Easy Pzc");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.setSize(800, 700);
          // frame.setPreferredSize(new Dimension(800, 700));
          frame.setBackground(SystemColor.menu);
          frame.setForeground(SystemColor.menuText);
          layoutFrame();
          bv = new JPanel();
          // Place the board viewer in a set of scrollbars.
          JScrollPane scroller = new JScrollPane(bv);
          scroller.setViewportBorder(BorderFactory.createLineBorder(Color.black));
          add(panMain, BorderLayout.CENTER);
          panMain.add(scroller, BorderLayout.CENTER);
          // now we can ask bv to draw itself
          panMain.revalidate();
          frame.setVisible(true);
          Image boardImage = createImage(300, 400);
          BufferedImage bi = ImageIO.read(new File(".\\data\\boards\\10_10.png"));
          Graphics boardGraph = boardImage.getGraphics();
          boardGraph.drawImage(bi, 0, 0, this);
          Graphics backGraph=bv.getGraphics();
          backGraph.drawImage(boardImage, 0, 0, this);
     public static void main(String s[]) {
          Gui gui = new Gui();
          try {
               gui.initialize();
          } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
}Edited by: clechenne on Nov 29, 2007 1:48 PM