chayu3

摘要：在Baths-stomp里面的每个Fluent Interface Interactor Impl，都继承了MarketDataAccessor，which is an abstract class。Class如果包含Abstract methods，则一定要声明为Abstract class。Abstract class与interface的区别是: 1，Abstract class可以有unimplemented methods，也可以有implemented methods。2，Java interface里只可以包含constant(默认Static final)和方法声明, 而Abs 阅读全文