Displaying a jtree with checkboxes and enabling some default checkboxes

I have created a jtree displaying a list of nodes hierarchically ,and created a checkbox for each node as well.
My problem is having created the jtree with checkboxes i need to have some of the nodes in the hierarchy checked by default on first launch of the gui.To do this i read a list of treepaths from a file and would want to traverse the tree and enable the node after finding it,which is what i am having issue with.
Your solution would be appreciated as i am a newbie and having got this far, feel like i need some back up :)
Thanks & Regards
Shashi

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Displaying a jtree with checkboxes and enabling some default checkboxes

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