不是，这段代码，真的不会报错吗。。。

public class Main {
    public static void main(String[] args) {
        Student s = new Student("Xiao Ming", 12, 89);
    }
}

class Person {
    protected String name;
    protected int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }
}

class Student extends Person {
    protected int score;

    public Student(String name, int age, int score) {
        super(name, age);  // 调用父类的构造方法Person(String, int)
        this.score = score;
    }
}

错误: 无法从静态上下文中引用非静态 变量 this

        Student s = new Student("Xiao Ming", 12, 89);

要改成这样吧

static class Person{}

static class Student extends Person{}