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  1. Which of these is true about unmodifiableCollection() method?
    1. unmodifiableCollection() is defined in Collection class
    2. unmodifiableCollection() returns a collection that cannot be modified
    3. unmodifiableCollection() method is available only for List and Set
    4. All of above
    5. None of these
Correct Option: C

unmodifiableCollection() is available for al collections, Set, Map, List etc.


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