LongStream flatMap(LongFunction mapper) example
Description
LongStream flatMap(LongFunction<? extends LongStream> mapper)
returns a stream by mapping function. This is an intermediate operation.
Syntax
flatMap has the following syntax.
LongStream flatMap(LongFunction<? extends LongStream> mapper)
Example
The following example shows how to use flatMap.
import java.util.stream.LongStream;
// ww w .j av a 2 s.co m
public class Main {
public static void main(String[] args) {
LongStream b = LongStream.of(1L, 2L, Long.MAX_VALUE, Long.MIN_VALUE);
b.flatMap(n -> LongStream.of(n)).forEach(System.out::println);
}
}
The code above generates the following result.
