Java

package array;
public class Student {
    
    // definition of fileds
    private int studentId= 0;
    private String name;
    private String family;

    //definition of constructor
    public Student(int _studentId, String _name, String _family){
        studentId= _studentId;
        name= _name;
        family= _family;
    }

    //definition of methods
    public int getStudentId(){
        return studentId;
    }
    public void setStudentId(int newStudentId){
        studentId= newStudentId;
    }

    public String getName(){
            return name;
    }
    public void setName(String newName){
        name= newName;
    }

    public String getFamily(){
        return family;
    }
    public void setFamily(String newFamily){
        family= newFamily;
    }
}

package array;
import java.io.*;
import array.Student;
public class Main {

    public static void main(String[] args) {
        //define Array of Object(Student's Class)
        Student[] st = new Student[3];
        st[0]= new Student(3400,"XXX", "YYY");
        st[1]= new Student(3800, "ZZZ", "WWW");
        st[2]= new Student(4200,"RRR", "MMM");

        System.out.println(st[1]);
        System.out.println("\n");
    }
}