Let us assume we have an array arr = [1, 3, -2, 7, 1, 1, -2] Now if we want to create a HashSet of it then it contains unique elements. HS = [1, 7, -2, 3] Here we can see that hashset does not have ...

The Java Collections Framework defines the java.util.Set interface for modeling sets. Three concrete implementations are java.util.HashSet, java.util.LinkedHashSet, and java.util.TreeSet.

Output Actual size of HashSet after inserting Students Object 2 Stored HashSet Objects [com.test.findnerd.example.Student@5cc2c535, com.test.findnerd.example.Student@28f10be] Java HashSet HashTable ...

HashMap vs. Hashtable similarities Both the Hashtable and HashMap implement the Map interface and both share the same set of methods used to add, remove and manipulate elements of a key-value, ...