See the following running example to find the average of numbers in a list by using Java 8:-
package com.java8.list;
import java.util.Arrays;
import java.util.IntSummaryStatistics;
import java.util.List;
public class AverageOfAllNumbersInList {
public static void main(String[] args) {
List<Integer> numbers = Arrays.asList(3, 2, 3, 7, 3, 5);
IntSummaryStatistics intSummaryStatistics = numbers.stream().mapToInt((x) -> x).summaryStatistics();
System.out.println("Average of numbers : " + intSummaryStatistics.getAverage());
}
}
Output:- Average of numbers : 3.8333333333333335
