public class EnhancedWelcomeGUI extends JFrame implements ActionListener, ItemListener{

private JTextField [] fields;
private JButton OK;

// list of states
private final String [] states = {"Alabama","Alaska","Arizona","Arkansas","California","Colorado","Connecticut","Delaware","Florida","Georgia","Hawaii","Idaho","Illinois","Indiana","Iowa","Kansas","Kentucky","Louisiana","Maine","Maryland","Massachusetts","Michigan","Minnesota","Mississipp","Missouri","Montana","Nebraska","Nevada","New Hampshire","New Jersey","New Mexico","New York","North Carolina","North Dakota","Ohio","Oklahoma","Oregon","Pennsylvania","Rhode Island","South Carolina","South Dakota","Tennessee","Texas","Utah","Vermont","Virginia","Washington","West Virginia","Wisconsin","Wyoming"};
private String state;

private JComboBox jcb;
private JRadioButton [] jrbs ;
private JTextArea jta;
private String gender;

public EnhancedWelcomeGUI() throws HeadlessException {
   // set the layout
   setLayout(new GridLayout(6, 2, 5, 5));

   // crate all textfields
   fields = new JTextField[4];
   for (int i = 0; i < fields.length; i++) {
         fields[i] = new JTextField(8);
   }

   //add all lable and object to the pane
   add(new JLabel("First Name"));
   add(fields[0]);
   add(new JLabel("Last Name"));
   add(fields[1]);
   add(new JLabel("Age"));
   add(fields[2]);

   //create jcombobox with list of states
   jcb = new JComboBox(states);

   add(new JLabel("Stare:"));
   add(jcb);

   // set Alabama as the default state
   jcb.setSelectedIndex(0);
   state = states[0];

Suppose that your work for a beverage company. The Company wants to...