find the greatest number in hashmap

1public class NewClass4 {
2    public static void main(String[] args)
3    {
4        HashMap<Integer,Integer>map=new HashMap<Integer, Integer>();
5        map.put(1, 50);
6        map.put(2, 60);
7        map.put(3, 30);
8        map.put(4, 60);
9        map.put(5, 60);
10        int maxValueInMap=(Collections.max(map.values()));  // This will return max value in the Hashmap
11        for (Entry<Integer, Integer> entry : map.entrySet()) {  // Itrate through hashmap
12            if (entry.getValue()==maxValueInMap) {
13                System.out.println(entry.getKey());     // Print the key with max value
14            }
15        }
16
17    }
18}