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what is the difference between collection and collections in java?


Collection

Collection interface is the root interface in the collection hierarchy. It declares the core methods for all collections.

Collections

The java.util.Collections class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, “wrappers”, which return a new collection backed by a specified collection, and a few other odds and ends.

Java interview questions on collections



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