Simple printing an Image

[Grzegorz Orczykowski]

Hi everyone!
I have got a problem with printing an Image in java. I found my code somewhere on the internet. The problem is that sometimes it prints all good but sometimes the blank page is printed. My printer works well and the path to the graphic is good. I do not change anything in the code and the results are different. Could someone tell me what is wrong?

                Toolkit tool = Toolkit.getDefaultToolkit();
                img = tool.getImage("./images/image.png");
 
                PrinterJob printJob = PrinterJob.getPrinterJob();
                printJob.setPrintable(new Printable()
                {
                    public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException {
                        if (pageIndex != 0) {
                            return NO_SUCH_PAGE;
                        }
                        graphics.drawImage(img, 0, 15, 600, 766, null);
                        return PAGE_EXISTS;
                    }
                });
                if (printJob.printDialog()) {
                    try {
                        printJob.print();
                    } catch (Exception prt) {
                    }
                } 

[Tony Docherty]

Does the image file ever change? because getImage() caches images keyed on the filename so if an image changes you may get an old cached image.
Some image loading is done asynchronously (not sure about getImage) so it maybe that the image isn't fully loaded when you try to print it.

[Rob Spoor]

Tony is right. You'll need a MediaTracker to help you identify when the image has fully loaded. Alternatively, you can go the lazy way and use ImageIcon to load the image for you. This does the hard work for you.