public static void main(String[] args) throws IOException {
        // Load your images
        BufferedImage[] images = new BufferedImage[9];
        images[0] = ImageIO.read(new File("path/to/image1.jpg"));
        images[1] = ImageIO.read(new File("path/to/image2.jpg"));
        images[2] = ImageIO.read(new File("path/to/image3.jpg"));
        images[3] = ImageIO.read(new File("path/to/image4.jpg"));
        images[4] = ImageIO.read(new File("path/to/image5.jpg"));
        images[5] = ImageIO.read(new File("path/to/image6.jpg"));
        images[6] = ImageIO.read(new File("path/to/image7.jpg"));
        images[7] = ImageIO.read(new File("path/to/image8.jpg"));
        images[8] = ImageIO.read(new File("path/to/image9.jpg"));

        // Determine the size of the grid
        int rows = 3;
        int cols = 6;
        int width = images[0].getWidth();
        int height = images[0].getHeight();
        int gridWidth = cols * width;
        int gridHeight = rows * height;

        // Create the new grid image
        BufferedImage gridImage = new BufferedImage(gridWidth, gridHeight, BufferedImage.TYPE_INT_ARGB);
        Graphics g = gridImage.getGraphics();

        // Fill the remaining spots with empty space (transparent)
        g.setColor(new Color(0, 0, 0, 0));
        g.fillRect(0, 0, gridWidth, gridHeight);

        // Draw the images into the grid
        int imageIndex = 0;
        for (int row = 0; row < rows; row++) {
            for (int col = 0; col < cols; col++) {
                if (imageIndex < images.length) {
                    g.drawImage(images[imageIndex], col * width, row * height, null);
                    imageIndex++;
                }
            }
        }

        // Dispose the graphics object
        g.dispose();

        // Save the grid image to a file
        ImageIO.write(gridImage, "png", new File("path/to/gridImage.png"));
    }

public static void main(String[] args) throws IOException {
        // Load your images
        BufferedImage[] images = new BufferedImage[9];
        images[0] = ImageIO.read(new File("path/to/image1.jpg"));
        images[1] = ImageIO.read(new File("path/to/image2.jpg"));
        images[2] = ImageIO.read(new File("path/to/image3.jpg"));
        images[3] = ImageIO.read(new File("path/to/image4.jpg"));
        images[4] = ImageIO.read(new File("path/to/image5.jpg"));
        images[5] = ImageIO.read(new File("path/to/image6.jpg"));
        images[6] = ImageIO.read(new File("path/to/image7.jpg"));
        images[7] = ImageIO.read(new File("path/to/image8.jpg"));
        images[8] = ImageIO.read(new File("path/to/image9.jpg"));

        // Determine the size of the grid
        int rows = 3;
        int cols = 6;
        int width = images[0].getWidth();
        int height = images[0].getHeight();
        int gridWidth = cols * width;
        int gridHeight = rows * height;

        // Create the new grid image
        BufferedImage gridImage = new BufferedImage(gridWidth, gridHeight, BufferedImage.TYPE_INT_ARGB);
        Graphics g = gridImage.getGraphics();

        // Fill the remaining spots with empty space (transparent)
        g.setColor(new Color(0, 0, 0, 0));
        g.fillRect(0, 0, gridWidth, gridHeight);

        // Draw the images into the grid
        int imageIndex = 0;
        for (int row = 0; row < rows; row++) {
            for (int col = 0; col < cols; col++) {
                if (imageIndex < images.length) {
                    g.drawImage(images[imageIndex], col * width, row * height, null);
                    imageIndex++;
                }
            }
        }

        // Dispose the graphics object
        g.dispose();

        // Save the grid image to a file
        ImageIO.write(gridImage, "png", new File("path/to/gridImage.png"));
    }