示例#1
0
 /**
  * Returns the specified image.
  *
  * @param url image url
  * @return image
  */
 public static Image get(final URL url) {
   try {
     return ImageIO.read(url);
   } catch (final IOException ex) {
     throw Util.notExpected(ex);
   }
 }
  /** Open a file and load the image. */
  public void openFile() {
    JFileChooser chooser = new JFileChooser();
    chooser.setCurrentDirectory(new File("."));
    String[] extensions = ImageIO.getReaderFileSuffixes();
    chooser.setFileFilter(new FileNameExtensionFilter("Image files", extensions));
    int r = chooser.showOpenDialog(this);
    if (r != JFileChooser.APPROVE_OPTION) return;

    try {
      Image img = ImageIO.read(chooser.getSelectedFile());
      image =
          new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
      image.getGraphics().drawImage(img, 0, 0, null);
    } catch (IOException e) {
      JOptionPane.showMessageDialog(this, e);
    }
    repaint();
  }