Java 8 Streams: Group a List of Strings by Length in 5 Minutes!

Learn how to use the powerful Java 8 Streams API to efficiently group a list of strings by their length. In this quick tutorial, we'll walk through a simple code example using Collectors.groupingBy() to transform a list of strings into a Map where the keys are string lengths and the values are lists of strings.

This is a fundamental technique for data processing with Java Streams, helping you write cleaner, more concise, and more readable code.

What you'll learn:

How to use Stream.collect()

The magic of Collectors.groupingBy()

Using a method reference (String::length)

How to print the resulting Map

Get the complete code example below to follow along!

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Видео Java 8 Streams: Group a List of Strings by Length in 5 Minutes! канала Byte Wise 010