Can you name collections in Java that use the hashCode method?

In Java, collections that use the hashCode() method for their operation are mainly hash tables and related data structures. The main ones are:

• HashMap — implements a key-value mapping based on a hash table.
• HashSet — a set based on HashMap, uses hashCode() to determine the uniqueness of elements.
• LinkedHashMap — an extension of HashMap that maintains insertion order, also uses hashCode().
• LinkedHashSet — similar to HashSet, but maintains insertion order.
• Hashtable — an outdated implementation of a hash table, also uses hashCode().

All these collections use hashCode() for fast search, insertion, and deletion of elements, combining it with the equals() method to check object equality.