请帮我写一个存储全班45人的姓名和数学成绩并按照数学成绩降序排列用java编程

import java.util.*;

public class Student { private String name; private int mathScore;

public Student(String name, int mathScore) {
    this.name = name;
    this.mathScore = mathScore;
}

public String getName() {
    return name;
}

public int getMathScore() {
    return mathScore;
}

}

public class Main { public static void main(String[] args) { List studentList = new ArrayList<>();

    // 添加45个学生
    studentList.add(new Student("张三", 90));
    studentList.add(new Student("李四", 85));
    studentList.add(new Student("王五", 95));
    // ... 还有42个学生

    // 按照数学成绩降序排列
    Collections.sort(studentList, new Comparator<Student>() {
        @Override
        public int compare(Student s1, Student s2) {
            return s2.getMathScore() - s1.getMathScore();
        }
    });

    // 输出排序结果
    for (int i = 0; i < studentList.size(); i++) {
        System.out.println("第" + (i + 1) + "名：" + studentList.get(i).getName() + "，数学成绩：" + studentList.get(i).getMathScore());
    }
}

}