Title Typeの取得

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
 
import javax.tv.service.SIManager;
import javax.tv.service.Service;
import javax.tv.service.navigation.ServiceFilter;
import javax.tv.service.navigation.ServiceList;
import javax.tv.xlet.Xlet;
import javax.tv.xlet.XletContext;
 
import org.bluray.ti.Title;
import org.bluray.ti.TitleType;
import org.havi.ui.HScene;
import org.havi.ui.HSceneFactory;
import org.havi.ui.HScreen;
 
public class Main implements Xlet {
    Graphics g = null;
    int x=100, y=100;
    public void initXlet(XletContext xc){
        try {
            Font font = new Font(null, java.awt.Font.BOLD, 48);
            HScene hs= HSceneFactory.getInstance().getFullScreenScene(
                    HScreen.getDefaultHScreen().getDefaultHGraphicsDevice());
            hs.setFont(font);
            hs.setVisible(true);
            g = hs.getGraphics();
            g.setColor(Color.white);
 
            // Titleリストの取得
            SIManager sim = SIManager.createInstance();
            ServiceList sl = sim.filterServices(new ServiceFilter(){
                public boolean accept(Service arg0) {
                    return true;
                }
            });
            for( int i = 0; i < sl.size(); i++ ){
                Title t = (Title)sl.getService(i);
                // Title Typeの取得
                TitleType tt = (TitleType)t.getServiceType();
                g.drawString(t.getName()+":"+tt.toString(), x, y); y+=50;
            }
        } catch (Exception e){
        }
    }
    public void startXlet(){}
    public void pauseXlet(){    }
    public void destroyXlet(boolean unconditional){ }