Using the JGIT, how can I retrieve the line numbers of added/deleted lines

Question

Assuming the following piece of code is committed to a Git repository:

int test(){
   int a = 3;
   int b = 4;
   int c = a + b;
   return c;
}

Answer 1

Just a tip for anyone who might have this problem. I did not manage to get the line numbers of the added and deleted lines but I did manage to get a string which contains only the added and deleted lines without the other lines which were not changed.

This was simply done by adding the line:

   df.setContext(0);

in the snippet I provided above right before the line

   df.format(diff);