Error in Memento Sample Code?

Have you tried to compile your sample code for the Memento design pattern? I don't think private member variables are open for access.

那个Memento类是个私有的,那它是不是Originator的内部类,可是也好象不是?也请斑竹解惑

这当然,但是如果将Memento写入Originator作为内部类就可以了。