This week's book giveaway is in the OO, Patterns, UML and Refactoring forum.
We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line!
See this thread for details.
The moose likes Performance and the fly likes Multiple MouseListeners vs single listener Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


JavaRanch » Java Forums » Java » Performance
Bookmark "Multiple MouseListeners vs single listener" Watch "Multiple MouseListeners vs single listener" New topic
Author

Multiple MouseListeners vs single listener

Unnar Björnsson
Ranch Hand

Joined: Apr 30, 2005
Posts: 164
I am making a little tile-based game where each tile is a JPanel and I need to know which tile was clicked with the mouse. What I did is have each tile implement the MouseListener Interface, that way I can simply use event.getComponent() to get the correct instance. However since each map in this game can have like 50x50 tiles (2500 tiles) I wonder if this is memory demanding and perhaps I should just use one listener and map the click coordinates to the correct tile on the map.
What do you think?
Paul Clapham
Sheriff

Joined: Oct 14, 2005
Posts: 19723
    
  10

I think that 2,500 listeners is a trivially small number when you have 2,000,000,000 bytes to fit them into.

There might be other reasons to use only one listener for the whole panel, or other reasons to use one listener per tile, but I don't think that memory usage is really important.
 
Have you checked out Aspose?
 
subject: Multiple MouseListeners vs single listener
 
jQuery in Action, 3rd edition