DoubleStream flatMap(DoubleFunction mapper) example
Description
DoubleStream flatMap(DoubleFunction<? extends DoubleStream> mapper)
returns a stream by mapping stream using mapping function.
Syntax
flatMap has the following syntax.
DoubleStream flatMap(DoubleFunction<? extends DoubleStream> mapper)
Example
The following example shows how to use flatMap.
import java.util.stream.DoubleStream;
//from w w w. jav a2 s.c om
public class Main {
public static void main(String[] args) {
DoubleStream b = DoubleStream.of(1.1,2.2,3.3,4.4,5.5);
b.flatMap(n -> DoubleStream.of(n*n))
.forEach(System.out::println);
}
}
The code above generates the following result.
