学渣表示不会，这个要怎么做呀😂

public class Person {

    private String name;

    private String sex;

    private int age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", sex='" + sex + '\'' +
                ", age=" + age +
                '}';
    }
    
}



public class Student extends Person {

    private String no;

    private double scoreEn;

    private double scoreMath;

    private double scoreCh;

    public double aver() {
        return (this.scoreEn + this.scoreMath + this.scoreCh) / 3;
    }

    public double max() {
        double scoreMax = Math.max(this.scoreEn, this.scoreMath);
        return Math.max(scoreMax, this.scoreCh);
    }

    public double min() {
        double scoreMin = Math.min(this.scoreEn, this.scoreMath);
        return Math.min(scoreMin, this.scoreCh);
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + getName() + '\'' +
                ", sex='" + getSex() + '\'' +
                ", age=" + getAge() +
                "no='" + no + '\'' +
                ", scoreEn=" + scoreEn +
                ", scoreMath=" + scoreMath +
                ", scoreCh=" + scoreCh +
                '}';
    }
}

百度很多的