• 2022-05-29
    (3-6)有如下类图,方法action的定义如下代码所示。调用方法action,错误的语句是()。void action(IA a) {// 省略语句 }[img=777x284]17e0c8222e5ab7a.png[/img]
    A: action(new B( ));
    B: action(new C( ));
    C: action(new ( )Y1);
    D: action(new D( ));