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CopyOnWriteArraySet containsAll() method in Java with Example

Last Updated : 24 Dec, 2018
The containsAll() method of Java CopyOnWriteArraySet is used to check whether two sets contain the same elements or not. It takes one set as a parameter and returns True if all of the elements of this set is present in the other set. Syntax: 
public boolean containsAll(Collection C)
Parameters: The parameter C is a Collection. This parameter refers to the set whose elements occurrence is needed to be checked in this set. Return Value: The method returns True if this set contains all the elements of other set otherwise it returns False. Below programs illustrate the CopyOnWriteArraySet.containsAll() method: Program 1:
Output: 
CopyOnWriteArraySet 1: [Geeks, for, 10, 20]
CopyOnWriteArraySet 2: [Geeks, for, 10, 20]

Does set 1 contains set 2: true
Output: 
CopyOnWriteArraySet 1: [Geeks, for, Geeks, 10, 20]
CopyOnWriteArraySet 2: [Geeks, for, Geeks, 10, 20]

Does set 1 contains set 2: true
Program 2:
Output: 
CopyOnWriteArraySet 1: [Geeks, for]
CopyOnWriteArraySet 2: [10, 20]

Does set 1 contains set 2: false
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