[jgrapht-users] Null Edge

[Mohammad I. <msi...@ua...>]

Hello,

I am a new member of this list and a new user of JGrapht. I was trying to
build a graph using the provided HelloJGraphT program. The program runs well
but when I was trying to print the Graph using toString I found that all the
edges are null. Here is the output

([v1, v2, v3, v4], [null={v1,v2}, null={v2,v3}, null={v3,v4}, null={v4,v1}])

Even when I tried to get the set of edges and try to print the
edges separately I got null edges. So what may be the problem.

-- 
Mohammad Saiful Islam
MSc(Thesis)
Dept of Computing Science
University of Alberta