1. class A { public int i = 10;
}
class B extends A{
public int i = 20;
} public class Test{
public static void main(String args[]){
B b = new B();
A a = b;
System.out.println(b.i);
System.out.println(a.i);
}
}输出为多少 ( ) A.10 10 B.10 20 C.20 10 D.20 20 |