Stream flatMapToInt(Function mapper) example
Description
Stream flatMapToInt(Function<? super T,? extends IntStream> mapper) returns an IntStream by replacing this stream with a mapped stream produced by applying the provided mapping function.
Syntax
flatMapToInt has the following syntax.
IntStream flatMapToInt(Function<? super T,? extends IntStream> mapper)
Example
The following example shows how to use flatMapToInt.
import java.util.Arrays;
import java.util.List;
import java.util.stream.IntStream;
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public class Main {
public static void main(String[] args) {
List<String> stringList = Arrays.asList("1.2","2.2","3","4","5");
stringList.stream()
.flatMapToInt(n-> IntStream.of(Integer.parseInt(n)) )
.forEach(System.out::println);
}
}