java之instanceof操作符
发布时间:2020-12-15 06:44:20 所属栏目:Java 来源:网络整理
导读:a intanceof A:判断a是否是类A的的一个实例,返回值为boolean public class Person extends Object{} public class Student extends Person{} public class Graduate extends Person{} public class Main { static void main(String[] args) { Person p = n
a intanceof A:判断a是否是类A的的一个实例,返回值为boolean public class Person extends Object{} public class Student extends Person{} public class Graduate extends Person{} public class Main { static void main(String[] args) { Person p = new Person(); Student s = Student(); Graduate g = Graduate(); System.out.println(p instanceof Person); System.out.println(s Person); System.out.println(g Person); } } 输出: true true true (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |