how to call a if-Statement from another class

In this program if-statement is presented which must be called from an another class with the class name Studentfactory.

public class Control {
    public static void main(String[] args) {
        Student[] studs = new Student[3];
        for (int i = 0; i < 3; i++) {
            studs[i] = createStudent();
        }
        for (int i = 0; i < 3; i++) {
            System.out.println(studs[i]);
        }
    }

    static Student createStudent() {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter your name:");
        String name = sc.nextLine();
        System.out.print("Enter your age:");
        int age = sc.nextInt();

        if(age <20) {
            return new JuniorStudent(name, age);
        } else if( age < 30) {
            return new IntermediateStudent(name,age);
        }
        return new SeniorStudent(name, age);
    }
}