HashSet contains() Method in Java
The Java.util.HashSet.contains() method is used to check whether a specific element is present in the HashSet or not. So basically it is used to check if a Set contains any particular element.
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Parameters: The parameter element is of the type of HashSet. This is the element that needs to be tested if it is present in the set or not.
Return Value: The method returns true if the element is present in the set else return False.
Below program illustrate the Java.util.HashSet.contains() method:
HashSet: [4, Geeks, Welcome, To] Does the Set contains 'Geeks'? true Does the Set contains '4'? true Does the Set contains 'No'? false