Duplicate-Array in java

private static void findDuplicatesUsingHashMap(int[] inputArray)
{
	HashMap<Integer, Integer> map = new HashMap<>();
		
	for (int element : inputArray) 
	{	
		if(map.get(element) == null)
		{
			map.put(element, 1);
		}
		else
		{
			map.put(element, map.get(element)+1);
		}
	}
		
	Set<Entry<Integer, Integer>> entrySet = map.entrySet();
		
	for (Entry<Integer, Integer> entry : entrySet) 
	{				
		if(entry.getValue() > 1)
		{
			System.out.println("Duplicate Element : "+entry.getKey()+" - found "+entry.getValue()+" times.");
		}
	}
}