TGF Graph creating and viewing

Question

I have some questions related to creating and displaying a graph created with the TGF extension.

Is it enough to describe my graph in this manner into a blank file with the .TGF extension ?

1 First node
2 Second node
#
1 2 Edge between the two

Is it enough to write it like this from Java into that file ?

Also how am i supposed to view the graph's drawing ? I have no clue.

Answer 1

TGF files require this information only. I have created such graphs with these information alone. Maybe some one else can give a clearer answer. :)
When it comes to view the graph, you can use yEd graph Editor (http://www.yworks.com/en/downloads.html#yEd)
As a start, open the graph with yed. Set Tools -> Fit Nod to Label and then use an appropriate layout from Layout menu. Ex: Layout -> Hierarchical -> Orientation -> Top to Bottoom -> OK
Seems TGF format is not expected to keep information about the formation of the graph unlike other complex formats such as GraphML