Hot to render missing chars from the original font using alternative font

Question

Hey i want use a font "Font1.ttf" render string, but the font not included some chars, i want when it havent it using "Font2.ttf" render them, i cant found any method make it.

code:

public static void drawString(@NotNull BufferedImage image, String str, int x, int y, Font font, Color color) {
    Graphics2D g = image.createGraphics();
    g.drawImage(image, 0, 0, null);
    g.setColor(color);
    g.setFont(font); // hot to add more alternative font?
    g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g.drawString(str, x, y);
    g.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_DEFAULT);
    g.dispose();
}