关于java泛型1

public class A <T> extends B <List<T>>{
private int b;
}

public class B<T> {

private T date;

public T getDate() {
return date;
}

public void setDate(T date) {
this.date = date;
}

}

public class C {

public static void main(String[] args) {
A<String> a = new A<String>();
List<String> list = a.getDate();
}
}

给A提供类型就相当于给T date;提供类型