In  this tutorial, we will see “What is a minBy() method in Java 8 and how we can use it?” minBy java 8

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Collectors minBy() Method

Syntax & Description

Returns a Collector that produces the minimal element according to a given Comparator, described as an Optional<T>.

Syntax: static <T> Collector<T,?,Optional<T>> minBy(Comparator<? super T> comparator)

Type Parameters:

<T> the type of the input elements


comparator a Comparator for comparing elements


a Collector that produces the minimal value

How to use it – an Example?



minBy java 8

In this example, we have a list of Person objects and we want to find the youngest person in the list. We use the minBy method with a Comparator that compares the ages of the persons and returns the person with the lowest age. The minBy method returns an Optional object, so we use the orElse method to get the actual person object or null if the list is empty.

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