drawing tool in java

Need a very simple drawing tool in java, capable of drawing basic shapes, lines circle elipse, eraser, undo, redo, file saving and a toolbar to show all the options also a menu bar with file edit erase options. The important thing is I need some documentation related to the project, like a use case diagram, component diagram, sequence diagram. If you dont know about these diagrams, it can still work, i can take care of those diagrams myself. The project requirements arent too high and would take an experienced developer very little time to get it done. This is very urgent. I have a maximum of 2 days(really stretching myself here)please help out