The containsAll() method of Java AbstractCollection is used to check whether two Collections contain the same elements or not. It takes one collection as a parameter and returns True if all of the elements of this collection is present in the other collection.
Parameters: The parameter C is a Collection. This parameter refers to the collection whose elements occurrence is needed to be checked in this collection.
Return Value: The method returns True if this collection contains all the elements of other Collection otherwise it returns False.
Below programs illustrate the AbstractCollection.conatinsAll() method:
Both the collections same: true
Both the collections same: false
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