Java EE (Java Enterprise Edition) General Discussion

I am going to draw a kind of tree by computer. The input is a text file that has branches' (elements) names and lengthes. After drawing tree on screen, user can pick up any branch to remove it. Simply say after right click mouse on the branch the branch is selected then user can left click mouse and delete the branch. Then redraw the tree on screen.

Is it can implemented? So user can submit a text file that contain the inforamtion of the tree, then computer draws the tree and user also can remove the tree branches on client site(remove branches by right click it open a delete dialog and then left click to delete it) get a new tree?
Is it possible and how. Thanks