I'm having all sorts of problems trying to do something that I expected to be quite simple. I have an ArrayList of float values, and I want to return the minimum value in the list as a float. I expected something like this to work:
public float getMin(){
float min = Collections.min(Arrays.asList(listOfThings)));
return min;
}
but I keep running into loads of incompatibility problems.
What's the most efficient way of doing this?
Thanks
If you use Collection as generic, Collection.min returns Object so you should convert it.
do this:
Object obj = Collections.min(arrayList);
Float f = Float.parseFloat(obj.toString());
return f.floatValue();
Or simply define ArrayList as
ArrayList<Float>
and you don't need to convert it.
Object: Collections.min() is typed. It returns the same type as the type of the collection.If you're using Java8 you can use stream object to achieve your goal:
float value = list.stream().min(Comparator.<Float>naturalOrder()).get();
