Get the keys with the biggest values from a hashmap?

Question

I have a HashMap defined like this...

HashMap uniqueNames = new HashMap();

It stor

Answer 1

Most obvious, now allowing for multiple with largest occurrence value:

Integer largestVal = null;
List> largestList = new ArrayList>();
for (Entry i : uniqueNames.entrySet()){
     if (largestVal == null || largestVal  < i.getValue()){
         largestVal = i.getValue();
         largestList .clear();
         largestList .add(i);
     }else if (largestVal == i.getValue()){
         largestList .add(i);
     }
}

Another option would be to use Guava's BiMap.

BiMap uniqueNames = ...;
List values = Lists.newArrayList(uniqueNames.values());
Collections.sort(values);
String name = uniqueNames.inverse().get(values.get(0));