在Java中如何开发简易图像编辑工具

BufferedImage image = ImageIO.read(new File("input.jpg"));

public class ImagePanel extends JPanel {
    private BufferedImage image;

    public void setImage(BufferedImage img) {
        this.image = img;
        repaint();
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        if (image != null) {
            g.drawImage(image, 0, 0, this);
        }
    }
}

public static BufferedImage adjustBrightness(BufferedImage src, int value) {
    int width = src.getWidth();
    int height = src.getHeight();
    BufferedImage result = new BufferedImage(width, height, src.getType());

    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            int rgb = src.getRGB(x, y);
            Color color = new Color(rgb);
            int r = clamp(color.getRed() + value);
            int g = clamp(color.getGreen() + value);
            int b = clamp(color.getBlue() + value);
            Color newColor = new Color(r, g, b);
            result.setRGB(x, y, newColor.getRGB());
        }
    }
    return result;
}

private static int clamp(int value) {
    return Math.max(0, Math.min(255, value));
}

ImageIO.write(image, "jpg", new File("output.jpg"));