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What is the difference between Collection and Collections in java?

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What is the difference between Collection and Collections in java?
posted Feb 5, 2018 by Ammy Jack

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2 Answers

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Collection is an interface whereas Collections is a class. Collection interface provides normal functionality of data structure to List, Set and Queue. But, Collections class is to sort and synchronize collection elements.

answer Feb 9, 2018 by Frank Lee
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Collections is merely an utility method class for doing certain operations, for example adding thread safety to your ArrayList instance by doing this.

List<Object> list = Collections.synchronizedList(new Arraylist<Object>());

The main difference in my opinion is that Collection is base interface which you may use in your code as a type for object while Collections just provides useful operations for handling the collections.

answer Mar 2, 2018 by Madu Hansi
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