title: Java: ButtonGroup will not display
body: <p>Cannot make my ButtonGroup display for the first two checkboxes. Attempted to add them, which seems successful, however the group will not show. Do you see what I did incorrectly?</p>
  
  <pre><code>  import javax.swing.*;
    import java.awt.*;
    import java.awt.event.*;
  
    public class JCottageFrame extends
    JFrame implements ItemListener {
  
       final int ONE_BEDROOM = 650;
       final int TWO_BEDROOM = 850;
       final int ROW_BOAT = 60;
       int totalPrice;
  
       ButtonGroup group = new ButtonGroup();
  
       JCheckBox oneBed = new JCheckBox
    ("One Bedroom/week $" + ONE_BEDROOM, false);
  
       JCheckBox twoBed = new
    JCheckBox("Two Bedroom/week $" + TWO_BEDROOM, false);
       JCheckBox boat = new JCheckBox ("Boat/week $" + ROW_BOAT, false);
  
       JLabel resortLabel = new JLabel ("Koch's Cottages Weekly Rentals");
       JLabel priceLabel = new JLabel("The price for your stay is");
  
       JTextField totPrice = new JTextField(4);
       JLabel optionExplainLabel2 = new JLabel
    ("Check the rentals you wish to purchase.");
  
  
       public JCottageFrame() {
  
          super("JCottageFrame");
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  
          setLayout(new FlowLayout());
  
          add(resortLabel);
          add(optionExplainLabel2);
          group.add(oneBed);
          group.add(twoBed);
          add(group);  //This does not seem to be working correctly
          add(boat);
          add(priceLabel);
          add(totPrice);
  
          totPrice.setText("$" + totalPrice);
  
          oneBed.addItemListener(this);
          twoBed.addItemListener(this);
          boat.addItemListener(this);
       }
          public void itemStateChanged(ItemEvent event) {
          Object source = event.getSource();
          int select = event.getStateChange();
  
          if(source == oneBed)
          if(select == ItemEvent.SELECTED)
             totalPrice += ONE_BEDROOM;
             else
                totalPrice -= ONE_BEDROOM;
             else
                if(source == twoBed) {
                if(select == ItemEvent.SELECTED)
                   totalPrice += TWO_BEDROOM;
                      else
                         totalPrice -= TWO_BEDROOM;
                }
                else
                   if(select == ItemEvent.SELECTED)
                      totalPrice += ROW_BOAT;
                      else
                         totalPrice -= ROW_BOAT;
                         totPrice.setText("$" + totalPrice);
          }
  
          public static void main(String[] args)
    {
             JCottageFrame aFrame =
    new JCottageFrame();
             final int WIDTH = 270;
             final int HEIGHT = 230;
             aFrame.setSize(WIDTH, HEIGHT);
             aFrame.setVisible(true);
  
             aFrame.setLocationRelativeTo(null);
    }
    }
  </code></pre>
  
  <p>Receiving a "no suitable method found for add(ButtonGroup)," though I did declare it. </p>