How are Collections different from Stream?

Answer»

Collections are the SOURCE for the Stream. Java 8 collection API is enhanced with the default methods RETURNING Stream<T&GT; from the collections.

Collections	Streams
Data structure holds all the data elements	No data is stored. Have the capacity to process an infinite number of elements on demand
External Iteration	Internal Iteration
Can be PROCESSED any number of times	Traversed only once
Elements are easy to access	No direct way of accessing specific elements
Is a data store	Is an API to process the data

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