How to convert Image to BufferedImage in Java?

馋奶兔 提交于 2019-12-02 13:12:51

If it's important to you, you can use a MediaTracker to "wait" for the image to be loaded, then you don't need to care about supplying a ImageObserver

try {
    MediaTracker mt = new MediaTracker(new JPanel());
    Image image = Toolkit.getDefaultToolkit().createImage("...");
    mt.addImage(image, 0);
    System.out.println("Wait for...");
    mt.waitForAll();
    System.out.println("I be loaded");

    BufferedImage bi = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_ARGB);
    Graphics2D g2d = bi.createGraphics();
    g2d.drawImage(image, 0, 0, null);
    g2d.dispose();
} catch (InterruptedException ex) {
    ex.printStackTrace();
}

Have a look at MediaTracker JavaDocs for more details

I don't wish to add any GUI, I just need to download image or fail

Okay, if you "need to download" the image, then you can just use ImageIO.read(URL), have a look at Reading/Loading an Image for more details ... then you won't need to care about Image or MediaTracker, as ImageIO returns a BufferedImage

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