It maintains insertion order for its elements. The method LinkedHashSet() throws the following exceptions: NullPointerException - if the specified collection is null; Example The following code shows how to use *LinkedHashSet* from *java.util*. LinkedHashSet You do not get access to it but I suspect that Collections does, so you should not give up hope that this is a viable and quick solution to your pr... ; TreeSet sorts the elements in ascending order. While creating a HashSetof your own class, always ensure that the HashCode() method of the key of HashSet doesn’t change. list More specifically, it uses a java.util.HashMap to store the hashes and elements and to prevent duplicates. Arraylist vs LinkedList vs LinkedHashSet LinkedHashSet on other hand is the implementation of set interface and it inherits Hashset … This … A Linked List is a linear Data Structure, which consists of a group of nodes, which are stored at random addresses. Some of the commonly used methods of the Collection interface that's also available in the List interface are:. Stream to HashSet : Using Collectors.toSet() Using Collectors.toCollection() 1. The LinkedHashSet is a modified version of Java HashSet. In contrast, the LinkedHashSet class is similar to the HashSet.