public class Organic<E> {
void react(E e) {
}
static void main(String[] args) {
Organic<? super Elem2> compound = new Organic<Elem>();
compound.react(new Elem());
}
}
class Elem {}
class Elem2 extends Elem {}
爲什麼有編譯錯誤
的方法反應(捕獲#1-的?超級elem2時)在類型有機不適用於參數( Elem)
?