Using a .ttf in StyleConstants.setFontFamily

Question

So I'm trying to use an apple II font in a project, but I'm having trouble figuring it out.

I can get it working as a Font object just fine, but StyleConstants.setFontFamily uses the params (MutableAttributeSet, String). How would I go about turning this .ttf into something that setFontFamily can work with?

public class PageLayout implements ActionListener
{  
  ....
  static Font appleII = new Font("Calibri", Font.BOLD, 40); 
  ....
  public static void createAIIFont()
  {
    try
    {
      FileInputStream fis = new FileInputStream(new File("PrintChar21.ttf"))
      Font base = Font.createFont(Font.TRUETYPE_FONT, fis);
      appleII = base.deriveFont(Font.PLAIN, 24);
    }
    catch (Exception ex)
    {
      ex.printStackTrace();
    }
  }

  public static void setText(String text)
  {
    SimpleAttributeSet attribs = new SimpleAttributeSet();  
    StyleConstants.setFontFamily(attribs, "//This is where the issue is");
    int len = pane.getDocument().getLength();
    pane.setCaretPosition(len);
    pane.setParagraphAttributes(attribs,true);
    pane.replaceSelection(text);
  }
}