Java Streams was introduced in Java 8. In this article we will see how we can use Java Streams to write a function in a more elegant and fancy way.

If you like to learn how to write few lines that can solve complex problems then you should give Java Streams a try.

The Problem

Let’s start with a problem statement, think about how we can solve it using loops and if-else statements, then we will see how to solve it using Java Streams.

You have been asked to write a function to return a list of the top N products from a list of products that appear in customer comments or reviews.

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