remove duplicated elements from an array list [duplicate]

Question

In my program I have an array list containing product objects in it. I want to remove duplicated product objects from it. Is there any efficient way other than looping over each element and compare them.

Answer 1

just add all element into set. it wont allow duplicate values

   List<Product> list=new ArrayList<>();
   Set<Product> set=new HashSet<>();
   set.addAll(list);