Looping through a List<Map<Integer, Map<Long, Integer>>> in Java -


as title suggests, i'm struggling looping through data structure given.

i have list of maps contain integer key , map value contains long , integer.

how can loop through list, map, map able access of required fields?

thanks.

edit: in response comments, looping through list i'm fine with. step 1 loop through list, i'm left with:

for (map<integer, map<long, integer>> periodscores : request.getperiodscoremap()) { ... }

it's goes in there confuses me.

currently have:

for (map<integer, map<long, integer>> periodscores : request.getperiodscoremap()) {         while (periodscores.entryset().iterator().hasnext()) {             map<integer, map<long, integer>> opponentscores =                     (map<integer, map<long, integer>>) periodscores.entryset().iterator().next();         }     }

and i'm struggling final map of

its matter of being careful , being able differentiate between map , list iterations

here example: 

for ( map<integer, map<long, integer>> level1 : list){    for(map.entry<integer,map<long, integer>> level2 : level1.entryset() ){       for(map.entry<long,integer> level3 : level2.getvalue().entrylist(){        }    } }

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