Java 逆序集合

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.ListIterator;

public class UtilDemo3 {
   public static void main(String[] args) {
      String[] coins = { "A", "B", "C", "D", "E" };
      List l = new ArrayList();

      for (int i = 0; i < coins.length; i++)l.add(coins[i]);
      ListIterator liter = l.listIterator();
      System.out.println("Before reversal");

      while (liter.hasNext())System.out.println(liter.next());
      Collections.reverse(l);
      liter = l.listIterator();
      System.out.println("After reversal");
      while (liter.hasNext())System.out.println(liter.next());
   }
}