BlackBerry JDE 4.7.0 API Reference
Great resource.
CTRL-F (Find Text): Font
it will give you the font class.
here is some example code when using Font in a paint method.
Code:
Font f = Font.getDefault().derive(Font.PLAIN, 18);
graphics.setFont(f);
graphics.setColor(Color.WHITE);
graphics.drawText("FUEL", 262, 0);
here is an example ("FUEL" top right):