`   class Canvas extends JPanel {
        @Override
        public void paint(Graphics g) {
            super.paint(g);
            for (int x = 0; x < FIELD_WIDTH; x++)
                for (int y = 0; y < FIELD_HEIGHT; y++) {
                    if (mine[y][x] > 0) {
                        g.setColor(new Color(mine[y][x]));
                        g.fill3DRect(x*BLOCK_SIZE+1, y*BLOCK_SIZE+1, BLOCK_SIZE-1, BLOCK_SIZE-1, true);
                    }
                }
            if (gameOver) {
                g.setColor(Color.white);
                for (int y = 0; y < GAME_OVER_MSG.length; y++)
                    for (int x = 0; x < GAME_OVER_MSG[y].length; x++)
                        if (GAME_OVER_MSG[y][x] == 1) g.fill3DRect(x*11+18, y*11+160, 10, 10, true);
            } else
                figure.paint(g);
        }
    }`