export class Student {
    name: string;
    age: number;
    grade: number;
    constructor(name: string, age: number, grade: number) {
        this.name = name;
        this.age = age;
        this.grade = grade;
    }
    introduce() {
    }
}
class Classroom {
    className: string;
    students: Student[];
    constructor(className: string, students: Student[]) {
        this.className = className;
        this.students = students;
    }
    listStudents() {
        this.students.forEach(student => {
        });
    }
}
const student1 = new Student('Alice', 15, 9);
const student2 = new Student('Bob', 14, 8);
const student3 = new Student('Charlie', 16, 10);
const classroom = new Classroom('Class A', [student1, student2, student3]);
classroom.listStudents();