Collectors averagingInt(ToIntFunction mapper) example
Description
Collectors averagingInt(ToIntFunction<? super T> mapper)
returns a Collector that produces the arithmetic mean of an integer-valued function applied to the input elements.
Syntax
averagingInt has the following syntax.
public static <T> Collector<T,?,Double> averagingInt(ToIntFunction<? super T> mapper)
Example
The following example shows how to use averagingInt.
import java.util.stream.Collectors;
import java.util.stream.Stream;
//w w w. ja va2 s .c om
public class Main {
public static void main(String[] args) {
Stream<String> s = Stream.of("1","2","3");
double o = s.collect(Collectors.averagingInt(n->Integer.parseInt(n)));
System.out.println(o);
}
}
The code above generates the following result.
