| 1 |
Suppose we have a bunch of buttons in a particular Container saying Red, Green, Blue as we illustrated earlier. Then a good action method would be
|
| 2 |
public boolean action(Event evt, Object arg) {
|
| 3 |
if( evt.target instanceof Button)
-
changeColor((String) arg); // changeColor Supplied by the user processes color defined by text string used in defining buttons
|
| 4 |
return true; // tell runtime that this event fully processed
|
| 5 |
}
|
| 6 |
void changeColor(String bname) { // A suitable user routine to be called by above action
|
| 7 |
if( bname.equals("Red")) setBackground(Color.red);
|
| 8 |
else if (bname.equals("Green")) setBackground(Color.green);
|
| 9 |
else if (bname.equals("Blue")) setBackground(Color.blue);
|
| 10 |
else setBackground(Color.pink); // our favorite color
|
| 11 |
}
|
