ListCellRenderer返回Null指针

这是我在这里的第一篇帖子，如果太可怕，请提前道歉。。。

我正在尝试使用自定义ListCellRenderer将自定义类列表中的项添加到JList中。每一行都有各种各样的东西，我想添加到一行中，并为列表中的每一行添加一个新行：

---

    public class MatchRecord {
    private String player;
    private Integer kills;
    private Integer deaths;
    private Integer assists;//getters + setters etc etc below}

---

private class GameStatistics{//this is the main class of the program
        listModel = new DefaultListModel();
        jList.setModel(listModel);
        listModel.clear(); //get rid of any junk in the list before loading
        recordJList.setLayoutOrientation(JList.VERTICAL);
        //add the records to the JList
        recordJList.setCellRenderer(new RecordListRenderer());
        List<MatchRecord> list = new ArrayList();
        list.addAll(recordSet); //recordSet is a Set<MatchRecord> which has been previously loaded from file
        for(int i = 0; i < list.size(); i++){
            System.out.println(list.get(i).getPlayer()); //this is NOT NULL!
            listModel.addElement(list.get(i));
        }
}

---

    public class RecordListRenderer extends JPanel implements ListCellRenderer {
    private JLabel[] labels = new JLabel[3];
    public RecordListRenderer(){
        setOpaque(true);
        setLayout(new GridLayout(1, 4));
        //set font size + colour here
    }
    public Component getListCellRendererComponent(JList list,
            Object r,
            int index,
            boolean isSelected,
            boolean hasFocus){
        MatchRecord record = (MatchRecord) r;
        labels[0].setText(record.getPlayer()); //This line returns a null pointer
        labels[1].setText(record.getKills());
        labels[2].setText(record.getDeaths());
        labels[3].setText(record.getAssists());
    return this}

我搜索列表的内容以确保它不是null，但上面突出显示的行返回一个null指针。

我对Java的了解仍然有限，所以任何(简单的！(帮助都将不胜感激。

private JLabel[] labels = new JLabel[3];

private JLabel[] labels = new JLabel[3];