Is there a way to check if two Collections contain the same elements, independent of order?

Question

I\'ve been looking for a method that operates like Arrays.equals(a1, a2), but ignoring the element order. I haven\'t been able to find it in either Google Colle

Answer 1

If you want to ignore order, then how about testing sets for equality?

new HashSet(c1).equals(new HashSet(c2))