Java 8 - Stream.map() Examples

Java 8 - Stream.map() Examples

Java 8 - Stream.map(), We'll explain what streams are in Java. We mention some of the basic methods used on streams, and focused specifically on the map() method and how it can be used for stream manipulation.

A Stream is a sequence of objects that supports many different methods that can be combined to produce the desired result.

They can be created from numerous data sources, which are most often collections but can also be I/O channels, Arrays, primitive data types etc.

It's important to emphasize that a stream is not a data structure, since it doesn't store any data. It's just a data source wrapper which allows us to operate with data faster, easier and with cleaner code.

A stream also never modifies the original data structure, it just returns the result of the pipelined methods.

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