More of a Java design question

[krishnak]

I have used a tile and added a graphic. The graphic contains a Buy Button. When the button is pressed, I need to pickup the tile.getValue(). There are several such tiles each having a button. How do I associate a button with the tile in which it is present, without using a Hashmap to store the button and its corresponding tile. Is there a better way?

[krishnak]

I have come up with this in the mean time, which is better than using a HashMap. Storing the tile info in the userdata of the button

    LOG.info("Price "+((Button)event.getSource()).getUserData());