java - How to get most recent 100 data from a Map? -

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i have map of long , string - map stores timestamp key , value data. 

map<long, string> eventtimestampholder = new hashmap<long, string>();

now want 100 recent data above map looking @ timestamp part of key , keep on adding data in list of string. in general populate 100 recent data in list.

what best way this? can use treemap here , sort keys basis on timestamp properly?

in general timestamp going - 1417686422238 , in milliseconds

in case mean "recent" added, can try linkedhashmap maintain order of insertion. can iterate on first 100 items.

you can iterate on map this: 

for(long key : eventtimestampholder.keyset()) {     string value = eventtimestampholder.get(key); }

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