Java tutorial
import java.awt.Color; import java.awt.image.BufferedImage; import java.awt.image.RenderedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; public class Main { public static void main(final String[] args) { BufferedImage img = map(320, 160); savePNG(img, "C:/Java_Dev/test.bmp"); } private static BufferedImage map(int sizeX, int sizeY) { final BufferedImage res = new BufferedImage(sizeX, sizeY, BufferedImage.TYPE_INT_RGB); for (int x = 0; x < sizeX; x++) { for (int y = 0; y < sizeY; y++) { res.setRGB(x, y, Color.WHITE.getRGB()); } } return res; } private static void savePNG(final BufferedImage bi, final String path) { try { RenderedImage rendImage = bi; ImageIO.write(rendImage, "bmp", new File(path)); //ImageIO.write(rendImage, "PNG", new File(path)); //ImageIO.write(rendImage, "jpeg", new File(path)); } catch (IOException e) { e.printStackTrace(); } } }