import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
// select the things by clicking on the picture
public class CheckBoxTest3 extends JFrame implements ActionListener {
// the label the display the price
private JLabel display = new JLabel();
// a list of JCheckBox, with the the electronic names on it
// with the price
private JCheckBox computer = new JCheckBox("Computer: $900");
private JCheckBox dvd = new JCheckBox("DVD: $250");
private JCheckBox printer = new JCheckBox("Printer: $70");
private JCheckBox monitor = new JCheckBox("Monitor: $299");
private JPanel pricePanel = new JPanel(new GridLayout(2,2));
private int price = 0;
// constructor
public CheckBoxTest3() {
display.setOpaque(true);
// set the background color
display.setBackground(Color.white);
// set the font color
display.setForeground(Color.blue.darker());
// use html file, ..
set the font size
display.setText("The total price is $0
");
getContentPane().add(display);
// add the components to pricePanel
pricePanel.add(computer);
pricePanel.add(dvd);
pricePanel.add(printer);
pricePanel.add(monitor);
// setIcon set the icon for the checkbox
// the icon is set to a computer icon with a black cross
// setSelectedIcon set the icon when you select the checkbox
// the icon is set to a computer icon without cross
computer.addActionListener(this);
computer.setBackground(Color.white);
computer.setIcon(new ImageIcon("images/computerx.jpg"));
computer.setSelectedIcon(new ImageIcon("images/computer.jpg"));
dvd.addActionListener(this);
dvd.setBackground(Color.white);
dvd.setIcon(new ImageIcon("images/dvdx.jpg"));
dvd.setSelectedIcon(new ImageIcon("images/dvd.jpg"));
printer.addActionListener(this);
printer.setBackground(Color.white);
printer.setIcon(new ImageIcon("images/printerx.jpg"));
printer.setSelectedIcon(new ImageIcon("images/printer.jpg"));
monitor.addActionListener(this);
monitor.setBackground(Color.white);
monitor.setIcon(new ImageIcon("images/monitorx.jpg"));
monitor.setSelectedIcon(new ImageIcon("images/monitor.jpg"));
getContentPane().add(pricePanel, BorderLayout.SOUTH);
}
public static void main(String[] args) {
CheckBoxTest3 f = new CheckBoxTest3();
f.setTitle("Bruin Computer Store");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.pack();
f.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
// check the source first
// if the source is selected, than add the price
// else, it is unselected, delete the price.
if(e.getSource() == computer) {
if(computer.isSelected()) {
price+=900;
} else {
price-=900;
}
} else if (e.getSource() == dvd) {
if(dvd.isSelected()) {
price+=250;
} else {
price-=250;
}
} else if(e.getSource() == printer) {
if(printer.isSelected()){
price+=70;
} else {
price-=70;
}
} else if(e.getSource() == monitor) {
if(monitor.isSelected()) {
price+=299;
} else {
price-=299;
}
}
// update the price
display.setText("The total price is $" + price + "
");
}
}