单选题
选择题:执行以下代码,输出结果是( )class Parent {int num = 10;}class Child extends Parent {int num = 20;}public class Test {public static void main(String[] args) {Parent p = new Child();System.out.println(p.num);}}
下列关于接口的描述,正确的是( )
单选题
选择题:执行以下代码,输出结果是( )class Parent {int num = 10;}class Child extends Parent {int num = 20;}public class Test {public static void main(String[] args) {Parent p = new Child();System.out.println(p.num);}}