making a list from XML to add to jTable

Hello i'm trying to put Values from my XML file to a table but it says that the length of the list ist 0.

package TableTest;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableModel;
import org.jdom2.Element;

public class JTableDemo extends JFrame {

    JTable table;
    DefaultTableModel model;
    List<TableData> data = new ArrayList<>();

    public static void main(String[] args) {
        // Die Namen der Columns
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                new JTableDemo().setVisible(true);
            }
        });

    }

    public JTableDemo() {
        // Per Xml datei laden
        List list = XmlData.instance.getRootElement().getChildren("Entity");

        System.out.println("Die größe ist: " + list.size());

        for (int i = 0; i < list.size(); i++) {
            Element e = (Element) list.get(i);

            System.out.println(i + " von " + e.getChildText("Name") + " " + e.getChildText("Art") + " " + e.getChildText("Datum"));
            data.add(new TableData(e.getChildText("Name"), e.getChildText("Art"), e.getChildText("Datum")));
        }

        Item i1 = new Item("Test", "Hi");
        Item i2 = new Item("Test1", "Hi");
        Item i3 = new Item("Test2", "Hi");

        // Spalten Überschrift
        String[] titles = new String[]{"Name", "Art", "Datum"};

        model = new DefaultTableModel(titles, 0);

        table = new JTable(model);

        // Items Model hinzufügen
        model.addRow(i1.getItem());
        model.addRow(i2.getItem());
        model.addRow(i3.getItem());

        // ###### // 
        setTitle("Demo");

        getContentPane().add(new JScrollPane(table), BorderLayout.CENTER);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setPreferredSize(new Dimension(500, 500));
        setMinimumSize(getPreferredSize());
        setMaximumSize(getPreferredSize());

    }

    private class Item {

        Vector<String> name;
        Vector<String> type;

        // ####### // 
        public Item(String name, String type) {
            this.type = new Vector<>();
            this.name = new Vector<>();
            this.name.add(name);
            this.type.add(type);
        }

        // Gibt das Item zurück
        public Vector getItem() {
            Vector i = new Vector();

            i.add(name);
            i.add(type);

            return i;
        }

    }

}

The test items i created i1, i2 and so on are shown in the table but i need to put this XML values in an Item to add it to my table, i cant make a custom model because the deadline is soon and the problem occured some minutes ago.

<?xml version="1.0" encoding="UTF-8"?>
<app>
  <!-- Pfad für Templates und speicher ort für die Entity.java-->
  <Entity>
    <Name>Buchung</Name>
    <Art>0</Art>
    <Datum>Wed Nov 19 11:25:20 CET 2014</Datum>
  </Entity>
</app>