Top N Strings by quantity from input list of strings

GetTop.java

import java.util.*;
public class GetTop{

public static void main(String[] args){

	List<String> input = new ArrayList<>();
	input.add("one");
	input.add("two");
	input.add("two");
	input.add("three");
	input.add("three");
        input.add("three");
        input.add("four");
        input.add("four");
	input.add("four");
        input.add("four");
	input.add("5");
	input.add("5");
	input.add("5");
	input.add("5");
	input.add("5");

	System.out.println(new GetTop().getTopThree(input, 3));
}

public List<String> getTopThree(List<String> input, Integer topAmount){
	Map<String, Integer> stringCounts = new HashMap<>();
	for(String current: input){
		if(stringCounts.get(current)==null){
			stringCounts.put(current, 1);
		}else{
			Integer newValue = stringCounts.get(current);
			stringCounts.put(current, ++newValue);
		}
	}

	NavigableMap<Integer, List<String>> result = new TreeMap<>();
	for(Map.Entry<String, Integer> entry: stringCounts.entrySet()){
		Integer count = entry.getValue();
		if(result.get(count)==null){
			List<String> resultList = new ArrayList<>();
			resultList.add(entry.getKey());
			result.put(count, resultList);
		}else{
			result.get(count).add(entry.getKey());
		}
	}
	List<String> returned = new ArrayList<>();

	int j = returned.size();
	while(!result.isEmpty() && j < topAmount){
		Map.Entry<Integer, List<String>> entry = result.pollLastEntry();
		List<String> tempList = entry.getValue();

		for (int i = 0; i < tempList.size() && j < topAmount; i++){
			returned.add(tempList.get(i));
			j = returned.size();
		}
	}
	return returned;
}

}