Stream mapToInt(ToIntFunction mapper) example
Description
Stream mapToInt(ToIntFunction<? super T> mapper) returns an IntStream
by applying the given function to this stream.
Syntax
mapToInt has the following syntax.
IntStream mapToInt(ToIntFunction<? super T> mapper)
Example
The following example shows how to use mapToInt.
import java.util.Arrays;
import java.util.List;
/*from www . j a v a 2 s .c o m*/
public class Main {
public static void main(String[] args) {
List<String> stringList = Arrays.asList("1","2","3","4","5");
stringList.stream()
.mapToInt(n-> Integer.parseInt(n) )
.filter(n-> n%2 == 0)
.forEach(System.out::println);
}
}
The code above generates the following result.
