(单选题, 2分)请说出E类的输出结果。Interface A { double f(double x,double y); }class B implements A { public double f(double x,double y) { return x*y; } int g(intA,int b) { return a+b; }}public class E {public static void main(String args]) { A a = new B(); System.out.println(a.f(3,5)); //【代码1】 B b = (B)a; System.out.println(b.g(3,5)); //【代码2】 }}
选项:
A: 15.08.0
B: 158
C: 15.08
D: 158.0
发布时间:2024-04-07 20:29:05