Hello, guys! Many of my readers emailed me, asking to write a post about the map and filter function of Java 8, because they found it difficult to use and understand. Even though I have previously blogged about both the map() and filter(), I am writing this post again to expand on the concept in a layman’s language to provide a better understanding for my readers and fellow Java developers.
The map() function is a method in the Stream class which represents a functional programming concept. In simple words, the map() is used to transform one object into other by applying a function.