How do you import a font?

'Airacobra Condensed' font available from Download Free Fonts.

import java.awt.*;
import javax.swing.*;
import java.net.URL;

class LoadFont {
    public static void main(String[] args) throws Exception {
        // This font is < 35Kb.
        URL fontUrl = new URL("http://www.webpagepublicity.com/" +
            "free-fonts/a/Airacobra%20Condensed.ttf");
        Font font = Font.createFont(Font.TRUETYPE_FONT, fontUrl.openStream());
        GraphicsEnvironment ge = 
            GraphicsEnvironment.getLocalGraphicsEnvironment();
        ge.registerFont(font);
        JList fonts = new JList( ge.getAvailableFontFamilyNames() );
        JOptionPane.showMessageDialog(null, new JScrollPane(fonts));
    }
}

OK, that was fun, but what does this font actually look like?

import java.awt.*;
import javax.swing.*;
import java.net.URL;

class DisplayFont {
    public static void main(String[] args) throws Exception {
        URL fontUrl = new URL("http://www.webpagepublicity.com/" +
            "free-fonts/a/Airacobra%20Condensed.ttf");
        Font font = Font.createFont(Font.TRUETYPE_FONT, fontUrl.openStream());
        font = font.deriveFont(Font.PLAIN,20);
        GraphicsEnvironment ge =
            GraphicsEnvironment.getLocalGraphicsEnvironment();
        ge.registerFont(font);

        JLabel l = new JLabel(
            "The quick brown fox jumps over the lazy dog. 0123456789");
        l.setFont(font);
        JOptionPane.showMessageDialog(null, l);
    }
}

You can use GraphicsEnvironment.registerFont

http://docs.oracle.com/javase/6/docs/api/java/awt/GraphicsEnvironment.html#registerFont(java.awt.Font)

With this you can load a font from a .ttf file:

private static final Font SERIF_FONT = new Font("serif", Font.PLAIN, 24);

private static Font getFont(String name) {
    Font font = null;
    if (name == null) {
        return SERIF_FONT;
    }

    try {
        // load from a cache map, if exists
        if (fonts != null && (font = fonts.get(name)) != null) {
            return font;
        }
        String fName = Params.get().getFontPath() + name;
        File fontFile = new File(fName);
        font = Font.createFont(Font.TRUETYPE_FONT, fontFile);
        GraphicsEnvironment ge = GraphicsEnvironment
                .getLocalGraphicsEnvironment();

        ge.registerFont(font);

        fonts.put(name, font);
    } catch (Exception ex) {
        log.info(name + " not loaded.  Using serif font.");
        font = SERIF_FONT;
    }
    return font;
}