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import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.Icon;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class MainClass extends JPanel implements ItemListener {
public MainClass() {
// Add check boxes to the content pane.
Icon normal = new MyIcon(Color.red);
Icon rollover = new MyIcon(Color.YELLOW);
Icon selected = new MyIcon(Color.BLUE);
JCheckBox cb = new JCheckBox("www.java2java.com", normal);
cb.setRolloverIcon(rollover);
cb.setSelectedIcon(selected);
cb.addItemListener(this);
add(cb);
}
public void itemStateChanged(ItemEvent ie) {
JCheckBox cb = (JCheckBox) ie.getItem();
int state = ie.getStateChange();
if (state == ItemEvent.SELECTED)
System.out.println(cb.getText() + " selected");
else
System.out.println(cb.getText() + " cleared");
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.getContentPane().add(new MainClass());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(200, 200);
frame.setVisible(true);
}
}
class MyIcon implements Icon {
Color cl;
public MyIcon(Color c) {
cl = c;
}
public int getIconWidth() {
return 32;
}
public int getIconHeight() {
return 32;
}
public void paintIcon(Component c, Graphics g, int x, int y) {
g.setColor(cl);
g.drawString("java2s.com", 0, 20);
}
}
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