下列java代码中Sample类中的4个输出语句的输出结果依次是 class Person { String name = "person"; public void shout(){ System.out.println(name); } } class Student extends Person { String name = "student"; String school = "school"; } public class Sample { public static void main(String[] args) { Person p = new Student(); System.out.println(p instanceof Student); System.out.println(p instanceof Person); System.out.println(p instanceof Object); System.out.println(p instanceof System); } }