Turn an array of pixels into an Image object with Java's ImageIO?

Question

I\'m currently turning an array of pixel values (originally created with a java.awt.image.PixelGrabber object) into an Image object using the following code:

Answer 1

JavaDoc on BufferedImage.getData() says: "a Raster that is a copy of the image data."

This code works for me but I doubt in it's efficiency:

        // Получаем картинку из массива.
        int[] pixels = new int[width*height];
            // Рисуем диагональ.
            for (int j = 0; j < height; j++) {
                for (int i = 0; i < width; i++) {
                    if (i == j) {
                        pixels[j*width + i] = Color.RED.getRGB();
                    }
                    else {
                        pixels[j*width + i] = Color.BLUE.getRGB();
                        //pixels[j*width + i] = 0x00000000;
                    }
                }
            }

BufferedImage pixelImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);    
    pixelImage.setRGB(0, 0, width, height, pixels, 0, width);