Добавление элемента в массив

public class Student {
    
    private int id;
    private String firstName;
    private String lastName;
    private String adress;
    private int group;
    private int course;
    private long telephone;
    private String faculty;
    private int year;
    
    public Student(int i,String f,String l, String a, int g, int c, long t, String fac , int y){
        id = i;
        firstName = f;
        lastName = l;
        adress = a;
        group = g;
        course = c;
        telephone = t;
        faculty = fac;
        year = y;
    }

public class GoStudent {
 
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int max = 10;
        Student [] arr = new Student[max];
        Scanner sc = new Scanner(System.in);
        Student st = new Student(1,"Can","Markov","Honolulu",10,3,+380993562148L,"Mechanical",1985);
        Student st1 = new Student(2,"Mark","Twen","Chicago",10,3,+380992568741L,"Mechanical",1985);
        Student st2 = new Student(3,"Rio","Tupolov","New York",10,3,+380992569874L,"Mechanical",1985);
        Student st3 = new Student(4,"Nani","Gomes","Tokio",9,4,+380992365984L,"IT",1984);
        Student st4 = new Student(5,"Rooney","Malkov","Kiev",9,4,+380993562148L,"IT",1984);
        Student st5 = new Student(6,"Siro","Peanov","Shanhai",9,4,+380993562148L,"IT",1984);
        Student st6 = new Student(7,"Todd","Shirokov","Moskov",9,4,+380993562148L,"IT",1984);
        Student st7 = new Student(8,"Elen","Markova","Honolulu",9,4,+380993562148L,"IT",1984);
        Student st8 = new Student(9,"Nick","Volkov","Honolulu",8,3,+380993562148L,"Ingeneering",1985);
        Student st9 = new Student(10,"Tiff","Tomov","Honolulu",8,3,+380993562148L,"Ingeneering",1985);

ss StudentArray {
    private int elems;
    private Student [] arr;
    
    public StudentArray(int max){
        arr = new Student[max];
        elems = 0;
    }
    public void insert(Student value){
        arr[elems] = value;
        elems++;
    }
}

arr.insert(st);

StudentArray arr = new StudentArray(max);
arr.insert(st)

arr[0] = st; 
        arr[1] = st1;
        arr[2] = st2;
        arr[3] = st3;