OOPレポート1

public class StudentCard {
    public static void main(String[] args) {
        Student[] students = new Student[100];
        for (int i = 0; i < students.length; i++) {
            students[i] = new Student(i + 1);
        }

        for (int k = 0; k < 3; k++) {
            int idx = (int) (Math.random() * students.length);
            System.out.printf("選んだ学生の添字: %3d, 学生番号: %3d, 成績: %3d%n",idx, students[idx].Id(), students[idx].Score());
        }
    }
}

class Student {
    private int id;
    private int score;

    public Student(int id) {
        this.id = id;
        this.score = (int) (Math.random() * 100) + 1;
    }

    public int Id() {
        return id;
    }

    public int Score() {
        return score;
    }

}