我正在尝试实现一些代码,这些代码从具有泛型变量的父级开始,然后由子级继承。
public class Parent <A>{
private A a;
public Parent (A a){
this.a=a;
}
}
public class Child <A> extends Parent<A>{
private A a;
public Child (A a){
this.a=a;
}
}
我收到一个编译错误,说明
constructor Parent in class Parent<A> cannot be applied to given types; A
您需要从子构造函数显式调用父构造函数:
public class Child <A> extends Parent<A> {
public Child (A a) {
super(a);
}
}