Mangler overblik over Java manøvrering

Jeg har tre klasser
*Kunde - nummer, navn, telefon
*KundeGUI - alle SWING attributter
*Kartotek - attribut ArrayList a;
Kartotek indeholder main()

main() kalder:
    Kartotek ka = new Kartotek();
    ArrayList a = ka.getarraylist();
        KundeGUI g = new KundeGUI(a); //sender ArrayList med.

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public KundeGUI(ArrayList a) {
    super();
    try {
        /* Set JAVA look and feel */
        UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
        /* Create the frame */
        KundeGUI aKundeGUI = new KundeGUI();

        /* Calculate the screen size */
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();

        /* Pack frame on the screen */
        aKundeGUI.pack();

        /* Center frame on the screen */
        Dimension frameSize = aKundeGUI.getSize();
        if (frameSize.height > screenSize.height)
                frameSize.height = screenSize.height;
        if (frameSize.width > screenSize.width)
                frameSize.width = screenSize.width;
        aKundeGUI.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);

        /* Add a windowListener for the windowClosedEvent */
        aKundeGUI.addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowClosed(java.awt.event.WindowEvent e) {
                System.exit(0);
            };
        });
        aKundeGUI.setVisible(true);
    } catch (Throwable exception) {
        System.err.println(\"Exception occurred in main() of KundeGUI\");
        exception.printStackTrace(System.out);
    }
}
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public KundeGUI() {
    super();
    initialize();
}
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Hvordan får jeg fat i den ArrayList i min SWING som er sendt med til KundeGUI?