Visitor Pattern - Help Needed

In a tree of nodes how can one use Visitor Pattern. If possible please refer some sample code for helpThanks
[122 byte] By [murlia] at [2007-10-2 13:54:57]
# 1
If your Google isn't broken, try this: http://www.google.com/search?q=java+visitor+pattern
yawmarka at 2007-7-13 11:58:22 > top of Java-index,Other Topics,Patterns & OO Design...