Introduction

Map and flatMap are both intermediate operations in Java streams that allow you to transform elements of a stream. Both methods are available on streams and allow us to perform operations on each element of a stream, producing a new stream as a result. However, they differ in how they handle the results of the transformation.

Let’s take a closer look at each method:

map() method

The map() method is used to transform each element of a stream into another object. It takes a Function as an argument, which defines the transformation logic. This function is applied to each element of the stream, and the result is collected into a new stream.

Here’s an example that demonstrates the map() method: