如何初始化自定义类对象的2D列表- Java

public class Student {
    private String name;
    private int age;
    private double score;

    // 构造方法
    public Student(String name, int age, double score) {
        this.name = name;
        this.age = age;
        this.score = score;
    }

    // getter和setter方法
    // ...
}

import java.util.ArrayList;
import java.util.List;

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

import java.util.ArrayList;
import java.util.List;

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

        for (int i = 0; i < 3; i++) {
            List<Student> row = new ArrayList<>();
            for (int j = 0; j < 3; j++) {
                // 创建Student对象并添加到row列表中
                Student student = new Student("Student " + i + "-" + j, i + j, i * j);
                row.add(student);
            }
            // 将row列表添加到students列表中
            students.add(row);
        }
    }
}