Stream map(Function mapper) example
Description
Stream map(Function<? super T,? extends R> mapper)
returns a stream by applying the given
function to this stream.
Syntax
map has the following syntax.
<R> Stream<R> map(Function<? super T,? extends R> mapper)
Example
The following example shows how to use map.
import java.util.Arrays;
import java.util.List;
//from w w w. ja v a2 s . co m
public class Main {
public static void main(String[] args) {
List<Integer> numberList = Arrays.asList(1,2,3,4,5);
numberList.stream()
.map(n-> n *2 )
.forEach(System.out::println);
}
}
The code above generates the following result.
