public class ComboBoxModel
    {
        private ArrayList<String> data = new ArrayList<String>();
        private int selected = 0;

        public ComboBoxModel(ArrayList<String> list)
        {
            data = list;
        }
    }

public class SimpleComponent extends JFrame {

    public SimpleComponent() {

        this.setLayout(new FlowLayout());
        this.setSize(800, 600);

        ArrayList<String> data = new ArrayList<String>();
        data.add("s");
        data.add("a");

        JComboBox<String> myComboBox = new JComboBox<String>();
        ComboBoxModel model = new ComboBoxModel(data);
        myComboBox.setModel([color=red]model[/color]);
    }

    public static void main(String[] args) {
        SimpleComponent w = new SimpleComponent();
        w.setVisible(true);
    }
}