java - 如何调用类层次结构中的方法？

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(); 
    }

另一个类是ISIRFinderAction从AbstractDOEMessageDashboardAction

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不工作。我认为它会在类层次结构中搜索它。

Answer 1

第二类扩展AbstractDOEMessageDashboardAction不AbstractDOEMessageFinderAction。

Answer 2

是否AbstractDOEMessageDashboardAction也延长BasicObjectFinder？

（注意，AbstractDOEMessageDashboardAction当然与 不同AbstractDOEMessageFinderAction）。