请说出E类中【代码1】,【代码2】的输出结果。interface Com { int add(int a,int b);}abstract class A { abstract int add(int a,int b);}class B extends A implements Com{ public int add(int a,int b) { return a*b; }}public class E {public static void main(String args[]) { B b = new B(); Com com = b; System.out.println(com.add(12,6)); //【代码1】 A a = b; System.out.println(a.add(10,5)); //【代码2】 }}
发布时间:2024-04-07 20:29:33