waiting for a file

[Fleur]

Hi people,

I'm trying to get a picture shown in a JPanel.
The problem is that the picture gets created when the app starts. This takes a while. Apparently the picture is not yet created when the app gets to the code to show the (not yet existing) picture which obviously generates an error.

How do I handle this?

[Nicholas Jordan]

Show the code you have so far.

[Fleur]

This is what i have so far:

                  try {
                      FileOutputStream oFile = new FileOutputStream("photo.jpg");
                      oFile.write(Picture.getData());
                      oFile.close();
                  }catch (Exception e){}

and a bit further on:

        ShowImage photo = new ShowImage();
        photo.setBounds(280,20,200,350);
        this.getContentPane().add(photo);
        this.repaint();

where ShowImage extends JPanel:

public class ShowImage extends JPanel {
    BufferedImage image;

    public ShowImage() {
        try {
            File input = new File("photo.jpg");
            image = ImageIO.read(input);
        } catch (Exception ie) {}
    }
    
    public void paint(Graphics g) {
        g.drawImage(image, 0, 0, null);
    }

It will do what I want the second time I run the app: the phot.jpg file is already there from the previous time and the picture will load into the ShowImage, but clearly I don't need the picture of the previous run :)