public class Parcel {
    public Contents contents() {
        return new Contents() {
            private int i = 50;
            public int value() {
                return i;
            }
        };
    }
    public static void main(String[] args) {
        Parcel p = new Parcel();
        Contents c = p.contents();
    }
}

------解决方案--------------------
lz比较输出
Java code
public static void main(String[] args){
        List list = new List() {
            private int i = 50;

            public int value() {
                return i;
            }

            public boolean add(Object e) {
                return false;
            }

            public void add(int index, Object element) {
            }

            public boolean addAll(Collection c) {
                return false;
            }

            public boolean addAll(int index, Collection c) {
                return false;
            }

            public void clear() {

            }

            public boolean contains(Object o) {
                return false;
            }

            public boolean containsAll(Collection c) {
                return false;
            }

            public Object get(int index) {
                return null;
            }

            public int indexOf(Object o) {
                return 0;
            }

            public boolean isEmpty() {
                return false;
            }

            public Iterator iterator() {
                return null;
            }

            public int lastIndexOf(Object o) {
                return 0;
            }

            public ListIterator listIterator() {
                return null;
            }

            public ListIterator listIterator(int index) {
                return null;
            }

            public boolean remove(Object o) {
                return false;
            }

            public Object remove(int index) {
                return null;
            }

            public boolean removeAll(Collection c) {

                return false;
            }

            public boolean retainAll(Collection c) {

                return false;
            }

            public Object set(int index, Object element) {

                return null;
            }

            public int size() {

                return 0;
            }

            public List subList(int fromIndex, int toIndex) {

                return null;
            }

            public Object[] toArray() {

                return null;
            }

            public Object[] toArray(Object[] a) {

                return null;
            }
        };
        System.out.println(new ArrayList().getClass().getName());
        System.out.println(list.getClass().getName());
    }

------解决方案--------------------
探讨

2楼的程序调试都通不过！


------解决方案--------------------
http://blog.csdn.net/ZangXT/archive/2008/07/28/2726427.aspx
曾经分析过内部类的一些原理，可以看看。