How to sort a map on map values

Question

I have a java Map

   Map<String , String>

The map is like following

 olah : 3
 vola : 2
 sola : 5
 jingle : 9

i want to sort the map on the value string like sort on 3,2,5,9 for example...is there any efficient way possible.

I also want to know what difference it will make if i put a map with same values but like

Map<String , long>

Does it improve any performance...?

See link here... http://stackoverflow.com/questions/109383/how-to-sort-a-mapkey-value-on-the-values-in-java — kaushik0033, Oct 22 '13 at 10:12
The basic is this: you can't. A map is a map is a map. What you **can** do, however, is to get the values as list and sort that list. — Ingo, Oct 22 '13 at 10:17

score 0 · Accepted Answer · edited May 23 '17 at 10:31

0

See: Sort a Map<Key, Value> by values (Java)

Something like

Map<String , long>

is not possible because Java Collections can not store primitive types. If you want to do that, you can use fastutil http://fastutil.di.unimi.it/ or trove http://trove.starlight-systems.com/. Memory consumption will be better, since no Long objects are created.

edited May 23 '17 at 10:31

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answered Oct 22 '13 at 10:13

user2737086

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How to sort a map on map values

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