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Jtree with checkboxes

Hi experts,
I have a requirement. I have attached a self-explanatory image of my requirement.
I need to have the exact tree structure shown there. To the left of each parent check box, '+' node should be shown, and upon expanding the parent node, the child nodes should be shown which should also be check box type-- THE CHILD NODE WOULD NEVER BE A PARENT NODE!! If I check the check box of parent node, then automatically all the child check boxes should get checked.
How will I implement this?
Any help will be greatly appreciated..

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8/22/2022 - Mon