// using if statements and logical operators   

 private void btnGoActionPerformed(java.awt.event.ActionEvent evt)                                      
    {                                          
          //---see what color they picked
            if (rdoRed.isSelected())
            {
                 JOptionPane.showMessageDialog(this, "You picked Red");
                rdoRed.setSelected(false);
            }
            else if (rdoBlue.isSelected())
            {
                 JOptionPane.showMessageDialog(this, "You picked Blue");
                rdoBlue.setSelected(false);
            }
            else if (rdoGreen.isSelected())
            {
                 JOptionPane.showMessageDialog(this, "You picked Green");
                rdoGreen.setSelected(false);
            }
            else
                 JOptionPane.showMessageDialog(this, "You did not pick a color");


            //---see if they are hungry!
            if (chkFries.isSelected() && chkDrink.isSelected())    //conditional AND (logial operator)
            {
                 JOptionPane.showMessageDialog(this, "You ordered fries and a drink with your color!.");
                chkFries.setSelected(false);
                chkDrink.setSelected(false);
            }
            else if (chkFries.isSelected() || chkDrink.isSelected()) //conditional OR with nested If statement
            {
                if (chkFries.isSelected())
                {
                     JOptionPane.showMessageDialog(this, "You should also get a drink.");
                    chkFries.setSelected(false);
                }
                else if (chkDrink.isSelected())
                {
                     JOptionPane.showMessageDialog(this, "You should also get some fries.");
                    chkDrink.setSelected(false);
                }
            }

    }