Java 8 Stream API

Overview

Java 8 introduced a  feature – the Stream API. This powerful tool enables  developers to manipulate collections of data in a concise and expressive way. By using streams, we can process a large datasets efficiently .

In this tutorial, we’ll throughly  look at the Stream API in Java 8. We will learn about its features, capabilities, and best practices. This comprehensive  tutorial is for everyone whether you’re a beginner or an experienced developer, this will help you with the knowledge to fully leverage the potential of streams in your Java projects. For every concept, there will be few code example to aid comprehensive understanding of the topic.

java.io streams vs java 8 stream API

Stream classes present in java.io package  like InputStream,                    OutputStream, Reader, and Writer etc. are used for performing I/O operations, for example reading from or writing to files, network sockets, or other sources and destinations of data.

java.io streams are mainly used for input/output operations and provide methods for reading and writing data from/to various sources and destinations.

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The java.util.stream package provides Stream API which is introduced in Java 8 and  used for levering functional approach for processing collections of data in Java.

Java 8 streams are focused on functional programming principles and allow for concise and expressive code for working with collections. It provides operations like map, filter, reduce, collect, forEach, etc.

Collection & Stream

Collection represent a group of object as a single entity whereas Stream API in java 8 is used for processing objects on collection.