第五十道Java小问题

import java.util.ArrayList;
import java.util.Arrays;
import java.util.ListIterator;
public class Test {
 public static void main(String[] args) throws Exception {
  ArrayList<String> a = new ArrayList<String>(Arrays.asList("A B C"
    .split(" ")));
  ListIterator<String> i = a.listIterator();
  i.next();
  i.set("X");
  i.remove();
  i.add("Y");
  i.previous();
  i.set("Z");
  i.remove();
  System.out.print(a);
 }
}

 

请问以上程序的输出是: