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Java 8 Streams

Stream In Java​

Introduced in Java 8, Stream API is used to process collections of objects. A stream in Java is a sequence of objects that supports various methods which can be pipelined to produce the desired result.

Use of Stream in Java​

  • Stream API is a way to express and process collections of objects.
  • Enable us to perform operations like filtering, mapping,reducing and sorting.

Java Stream Features​

The features of Java stream are mentioned below:

  • A stream is not a data structure instead it takes input from the Collections, Arrays or I/O channels.
  • Streams don’t change the original data structure, they only provide the result as per the pipelined methods.
  • Each intermediate operation is lazily executed and returns a stream as a result, hence various intermediate operations can be pipelined. Terminal operations mark the end of the stream and return the result.

Operations on Streams:​