Who can help a newbie solve THIS one???

Question

Ok,
I have made a class that looks like this...
class holder{
JRadioButton button = new JRadioButton();
int x =0;
int y =0;
I have now made 3 objects of class holder and placed each RadioButton from the 3 objects onto the applet screen. I have also added itemlisteners for each button.
This is my problem. When a holder object is clicked, I want to do two things. I want to change the icon AND be able to change the x and/or y variable.
I can get the source of the object by doing something like this....
AbstractButton source = (AbstractButton) itm.getSource() ;
but when I try something like this
Holder source = (Holder) itm.getSource
and then click on the button in the applet I get a ClassCastException error.
Any ideas?

Answer 1

class holder{
JRadioButton button = new JRadioButton();
int x =0;
int y =0;
your holder HAS a JRadioButton but not IS a JRadioButton
so you cannot do the casting like that
define like
class holder extends JRadioButton
and you can cast holder to JRadioButton
i thought u want to do sth like
class holder extends JRadioButton{ int x; int y;}
class test extends Applet {
     private holder ;
     public void init() {
     h =0 new holder();
     holder.addActionListener(new holderHandler(this)); // pass in applet
     add(holder);
     class holderHandler implements ActionListener{
          Applet applet;
          public holderHandler(Applet a) {applet =a ;}
          public void actionPerformed(ActionEvent e)
          {  changing x,y event here}
}