Driver driver = (Driver) driverComboBox.getSelectedItem();
IPatchDriver driver = (IPatchDriver) driverComboBox.getSelectedItem();
    protected void doit() {        Driver driver = (Driver) driverComboBox.getSelectedItem();        int bankNum  = bankComboBox.getSelectedIndex();        int patchNum = patchNumComboBox.getSelectedIndex();        driver.storePatch(p, bankNum, patchNum);        setVisible(false);        dispose();    }