Java集合中迭代器的常用用法

该例子展示了一个Java集合中迭代器的常用用法
public class LinkedListTest {
    public static void main(String[] args) {
        List<String> a = new LinkedList<String>();
        a.add("Amy");
        a.add("Carl");
        a.add("Erica");

        List<String> b = new LinkedList<String>();
        b.add("Bob");
        b.add("Doug");
        b.add("Frances");
        b.add("Gloria");

        ListIterator<String> aIter = a.listIterator();
        Iterator<String> bIter = b.iterator();

        while (bIter.hasNext()) {
            if (aIter.hasNext()) aIter.next();
            aIter.add(bIter.next());
        }

        System.out.println(a);

        bIter = b.iterator();
        while (bIter.hasNext()) {
            bIter.next();
            if (bIter.hasNext()) {
                bIter.next();
                bIter.remove();
            }
        }

        System.out.println(b);

        a.removeAll(b);

        System.out.println(a);
    }
}