Making an If Statement for first round of Switch Java

Im trying to set a specific image for only the first iteration of a for loop through a switch. For case 'f' I would like to add a different image on the first iteration.

How would I do this? Is it even possible to keep track of within a switch?

    for (char c : symbols) {
            switch (c) {
            case 'X':
                g2.setColor(Color.BLACK);
                g2.drawImage(wallImg, x, y, width, height, null);
                break;
            case 's':
                g2.setColor(Color.GREEN);
                g2.drawImage(snakeImg, x, y, width, height, null);
                break;
            case 'f':
                g2.setColor(Color.ORANGE);
                g2.drawImage(burgerImg, x, y, width, height, null);
                break;
            case '.':
                g2.setColor(Color.WHITE);
                g2.fillRect(x, y, width, height);
                break;
            case 'n':
                y += height;
            }