HashSet add() Method in Java
The Java.util.HashSet.add() method in Java HashSet is used to add a specific element into a HashSet. This method will add the element only if the specified element is not present in the HashSet else the function will return False if the element is already present in the HashSet.
Parameters: The parameter element is of the type HashSet and refers to the element to be added to the Set.
Return Value: The function returns True if the element is not present in the HashSet otherwise False if the element is already present in the HashSet.
Below program illustrate the Java.util.HashSet.add() method:
HashSet: [4, Geeks, Welcome, To]