【stream_map】import java.util.Arrays;
import java.util.List;
public class Main {
public static void main(String[] args) {
List<Integer> _numbers = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
Object[] doubled = _numbers.stream()
.map(value -> value * 2)
.toArray();
System.out.println(Arrays.toString(doubled));
}
}
