Steps to reproduce (from [nbusers] Problem with UML Sequence Diagram & Reverse engineer):

I create a new project with a main class named "Main" (suggested by
default). Then, i create an empty method named "toto()". Finally, in my
static main method, i create a new instance of my class Main, and i call
toto() from it.



> > public class Main {
> > 
> >     /**
> >      * @param args the command line arguments
> >      */
> >     public static void main(String[] args) {
> >         // TODO code application logic here
> >         new Main().toto();
> >     }
> >     
> >     public void toto() {
> >         
> >     }
> > 
> > }
> > 

For the moment, everything is good...

I reverse engineer my sources (right click on source packages > Reverse
Engineer). Now, i have a new UML projet with a model. 
After that, in my uml model, i decide to create two diagrams. The first one,
a class diagram, by right clicking on the class "Main" in my model ("Create
Diagram from selected elements"). The second one, by right clicking on the
"public void main (...)" method in my model ("Create Diagram from selected
elements").