Question

How to use statistics collectors to calculate statistics in Java

Answer 1

package javaapplication1;

import java.util.Arrays;
import java.util.IntSummaryStatistics;
import java.util.List;

public class JavaApplication1 {

    public static void main(String[] args) {

        List<Integer> numbers = Arrays.asList(3, 1, 2, 4, 12, 3, 1, 5, 6);

        IntSummaryStatistics stats = numbers.stream().mapToInt((n) -> n).summaryStatistics();

        System.out.println("Max : " + stats.getMax());
        System.out.println("Min : " + stats.getMin());
        System.out.println("Sum : " + stats.getSum());
        System.out.println("Average : " + stats.getAverage());
    }
}

/*
run:

Max : 12
Min : 1
Sum : 37
Average : 4.111111111111111

*/

 

70+ SQL courses for beginners and professionals