Internals of Stream in Java

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Why do we need Stream?

As we know that Stream is a sequence of data. So we need need this Stream to access data so that we could do I/O operation on that data. Below are some reasons which will tell us why do we need stream.

1)In order to perform input/output operation ,we need Stream.
2)Without Stream ,we cannot perform input/output operation.
3)To save your output and input in the hard-disk permanently,we need Stream.

 Example
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Banking Application(Before came to the concept of database, developer used
STREAM for developed bank application or etc).

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