java - Remove objects from an ArrayList based on a given criteria

Question

I would like to remove an element from an ArrayList in Java if it meets a certain criteria.

ie:

for (Pulse p : pulseArray) {
    if (p.getCurrent() == null) {
        pulseArray.remove(p);
    }
}

I can understand why this does not work, but what is a good way to do this?

Answer 1

You can use Collection::removeIf(Predicate filter) (available from Java8 onwards), here is a simple example:

final Collection<Integer> list = new ArrayList<>(Arrays.asList(1, 2));
list.removeIf(value -> value < 2);
System.out.println(list); // outputs "[2]"