如何在类层次结构中调用方法？

Question

我有这个从另一个类

扩展的超类

public abstract class AbstractDOEMessageFinderAction extends BasicObjectFinder {

    public Object performBasicSearch() {

        // works fine because getQuery is defined in BasicObjectFinder
        return getQuery(); 
    }

另一个类ISIRFinderAction从AbstractDOEMessageDashboardAction

延伸

ISIRFinderAction extends AbstractDOEMessageDashboardAction {

    // My aim is to make sure this method works so that I will make
    // the super class's performBasicSearch() method abstract.

    public Object performBasicSearch() {

        // this one doesnt even compile but it extends AbstractDOEMessageDashboardAction
        // which in turn extends BasicObjectFinder
        return getQuery();

    }

}

我错过了什么吗？为什么getQuery无效。我以为它会在类层次结构中搜索它。

Answer 1

第二类扩展AbstractDOEMessageDashboardAction而不是AbstractDOEMessageFinderAction。

Answer 2

AbstractDOEMessageDashboardAction是否也会延伸BasicObjectFinder？

（注意，AbstractDOEMessageDashboardAction与AbstractDOEMessageFinderAction不同。