AbstractCollection contains() Method in Java with Examples
The contains() method of Java AbstractCollection is used to check whether an element is present in a Collection or not. It takes the element as a parameter and returns True if the element is present in the collection.
Parameters: The parameter element is of type Collection. This parameter refers to the element whose occurrence is needed to be checked in the collection.
Return Value: The method returns True if the element is present in the Collection otherwise it returns False.
Below programs illustrate the Java.util.AbstractCollection.contains() method:
Abstract Collection:[Geeks, for, Geeks, 10, 20] Does the Collection contains 'Hello': false Does the collection contains '20': true Does the Collection contains 'Geeks': true
Abstract Collection:[20, Geeks, TreeSet, for] Does the Collection contains 'TreeSet': true Does the Collection contains 'Hello': false Does the collection contains '20': true Does the Collection contains 'Geeks': true
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