How to restrict leaf node

Hi,
My current JTree code behavior is such that when I add new node in JTree it adds to it's parent and selects that node by default (I mean focus goes to the new node).. and can keep max three node and 5 leaf
Following is an example of that:
RootNode
-Node1
--Node1a
--Node1b
-Node2
--Node2a
-Node3
--Node3a
--Node3b
The scenario is:
When I add a new leaf it should see if total five leaf is connected in any combination of any node and give msg 'u can connect max 5 leaf'...
i mean if one node ---max 5 leaf
if two node is connected ---max 5 leaf(we can add 5 leaf in two node)
if three node is connected---max 5 leaf(we can add 5 leaf in three node)
How do i proceed.... need help
regards
tarique

Redefine add() method of your node and do your processing there.
Denis Krukovsky
http://dotuseful.sourceforge.net/

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