java - Sort a map on key and value -


i want sort map on key , value. first on key on value. example, should result;

1,2 1,3 2,1 2,2

anyone has suggestion on how achieve effectively? i've been seeing people using treemap sort keys, need values.

or ofcouse other method of sorting pairs on key , value welcome.

import java.util.sortedset; import java.util.treeset;  public class sortmaponkeyandvalue {      public static void main(string[] args) {         sortedset<keyvaluepair> sortedset = new treeset<keyvaluepair>();         sortedset.add(new keyvaluepair(1, 2));         sortedset.add(new keyvaluepair(2, 2));         sortedset.add(new keyvaluepair(1, 3));         sortedset.add(new keyvaluepair(2, 1));          (keyvaluepair keyvaluepair : sortedset) {             system.out.println(keyvaluepair.key+","+keyvaluepair.value);         }     } } class keyvaluepair implements comparable<keyvaluepair>{     int key, value;      public keyvaluepair(int key, int value) {         super();         this.key = key;         this.value = value;     }      public int compareto(keyvaluepair o) {         return key==o.key?value-o.value:key-o.key;     } }

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