Check if an ArrayList contains every element from another ArrayList (or Collection)

Question

There is probably a simple one-liner that I am just not finding here, but this is my question:

How do I check if an ArrayList contains all of the objects in another

Answer 1

isEqualCollection() method declared in the org.apache.commons.collections.CollectionUtils gives you the collections are same or not.

if (CollectionUtils.isEqualCollection(collectionA,collectionB)) { do smt... }