import java.util.ArrayList;
import java.util.function.Consumer;

public class Main {
  public static void main(String[] args) {
    ArrayList numbers = new ArrayList();
    numbers.add(5);
    numbers.add(9);
    numbers.add(8);
    numbers.add(1);
    Consumer method = (n) -> { System.out.println(n); };
    numbers.forEach( method );
  }
}