com.hp.hpl.jena.query.ResultSet nested loop

[Jorge Christodoulou]

Hi, I have ResultSet a and ResultSet b (com.hp.hpl.jena.query.ResultSet)
for(; a.hasNext() ;){   String s_a = 
a.nextSolution().get(commonVars.get(0)).toString();        for(; b.hasNext() 
;){           String s_b = b.nextSolution().get(commonVars.get(0)).toString();  
              if(s_a.equalsIgnoreCase(s_b))                   .....   }}
The problem is that it gets in the second loop only for the first iteration of 
the first loop.Is this because Iterators are single use only and what can i do 
if so? Any ideas will be helpfull.