Question

Java 14-8

Finish the JInsurance application that allows the user to choose insurance options in JCheckBoxes. Use a ButtonGroup to allow the user to select only one of two insurance types—HMO (health maintenance organization) or PPO (preferred provider organization). Use regular (single) JCheckBoxes for dental insurance and vision insurance options; the user can select one option, both options, or neither option.

As the user selects each option, display its name and price in a text field; the HMO costs $200per month, the PPO costs $600 per month, the dental coverage adds $75 per month, and the vision care adds $20 per month. When a user deselects an item, make the text field blank.

----------------------------------------------------------Code given-----------------------------------------------------

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class JInsurance extends JFrame implements ItemListener {
FlowLayout flow = new FlowLayout();
ButtonGroup insGrp = new ButtonGroup();
JCheckBox hmo = new JCheckBox("HMO", false);
JCheckBox ppo = new JCheckBox("PPO", false);
JCheckBox dental = new JCheckBox("Dental", false);
JCheckBox vision = new JCheckBox("Vision", false);
JTextField insChoice = new JTextField(20);
String output, insChosen;
public JInsurance() {
// Write your code here
}
public static void main(String[] arguments) {
JInsurance iFrame = new JInsurance();
iFrame.setSize(400, 100);
iFrame.setVisible(true);
}
@Override
public void itemStateChanged(ItemEvent check) {
// Write your code here
}
}

Answer 1

/*
* Java program that display a gui window that contains
* four check boxes. As user select the check boxes.
* the text boxes will display the price of the service
* */
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class JInsurance extends JFrame implements ItemListener
{
   FlowLayout flow = new FlowLayout();
  
   ButtonGroup insGrp = new ButtonGroup();
   JCheckBox hmo = new JCheckBox("HMO", false);
   JCheckBox ppo = new JCheckBox("PPO", false);
  
  
   JCheckBox dental = new JCheckBox("Dental", false);
   JCheckBox vision = new JCheckBox("Vision", false);
  
   JTextField insChoice = new JTextField(20);
   String output, insChosen;
  
   //set contant values
   final int HMO_PRICE = 200;
   final int PPO_PRICE = 600;  
   final int DENTAL_PRICE = 75;
   final int VISION_PRICE = 20;
  
   /*Constructor */
   public JInsurance()
   {
       //set title
       setTitle("INSURANCE");
       //set flow as layout
       setLayout(flow);
      
       //add hmo and ppo to the button group
       insGrp.add(hmo);
       insGrp.add(ppo);
      
       //Add ItemListener to the dental and vision check boxes
       hmo.addItemListener(this);
       ppo.addItemListener(this);
       //Add hmo and ppo to frame
       add(hmo);
       add(ppo);
      
       //Add dental and vision to frame
       add(dental);
       add(vision);
      
       //Add ItemListener to the dental and vision check boxes
       dental.addItemListener(this);
       vision.addItemListener(this);

       //add the text field to the frame
       add(insChoice);
   }
  
  
   public static void main(String[] arguments)
   {
       JInsurance iFrame = new JInsurance();
       iFrame.setSize(400, 100);
       iFrame.setVisible(true);
   }

   /*Implement the itemStateChanged method */
   public void itemStateChanged(ItemEvent check)
   {
       output="";
       //checking if hmi is selected
       if(hmo.isSelected())
           output=String.valueOf("HMO $:"+HMO_PRICE);  
       //checking if ppo is selected
       if(ppo.isSelected())
           output=String.valueOf("PPO $:"+PPO_PRICE);
       //checking if dental is selected
       if(dental.isSelected())
           output+=String.valueOf("Dental $:"+DENTAL_PRICE);  
       //checking if vision is selected
       if(vision.isSelected())
           output+=String.valueOf("Vision $:"+VISION_PRICE);  
       /*Set set output to the insChoice */
       insChoice.setText(output);
   }
}

Sample Output: