Add group/ungroup features to JavaDrawing Application

I wrote a java vector drawing programm, which can draw simple graphic [login to view URL] I can select them as single object or group of objects and move them around and delete [login to view URL] currently,i can only define 1 group of objects,and if i select other object out of this group, i will lost the first group which i [login to view URL] features i want now are: <1>more group can be [login to view URL] selected group will be treated as single object, for example by moving around and [login to view URL] more, the groups can again be groupped as one [login to view URL] means the hierachical structures should be [login to view URL] i ungroup them, the elements in the group will be again single objects or groups(currently i am using Vector to store the objects) <2> save the drawing information as well as the structure of the groups which were selected during the process, and the saved file should be .txt file. the GUI and most part of the programm was finished, what you should do is to add the features which i mentioned above. If my description is not clear, try some drawing programm, like CorelDraw and KIllustrator under Linux(it has group/ungroup function, that is what i want) Detailed information and source code which i wrote will be provided on request. The speed to finish this programm and the good communication between us and patience are crucial if your want to make bids Thanks ! --maxim ## Deliverables Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. Complete copyrights to all work purchased. The Code should be WELL COMMENTED. ## Deadline information becouse of time pressure,i will close this bid in just few days. And deadline will be discussed privatly when you make bids