if (Objects.isNull(conn)) {
        Class.forName("com.mysql.cj.jdbc.Driver");
        conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/university?serverTimezone=UTC", dbUser, dbPass);
    }
    return conn;
}

Connection conn = getDbConnection();
    List<Student> result = new ArrayList<>();

    String sql = "SELECT * FROM student s " +
            "INNER JOIN university u ON s.university_fk_id = u.university_id
             WHERE u.university_name = 'Moscow Technical University'";
    PreparedStatement stmt = conn.prepareStatement(sql);
    ResultSet rs = stmt.executeQuery(sql);

    try (conn; stmt; rs) {
        while (rs.next()) {
            Student student = new Student();
            String firstName = rs.getString("first_name");
            student.setFirst_name(firstName);
            student.setLast_name(rs.getString("last_name"));
            student.setUniversity_fk_id(rs.getInt("university_fk_id"));

            University university = new University();
            university.setUniversity_id(rs.getInt("university_id"));
            university.setUniversity_name(rs.getString("university_name"));
            result.add(student);
        }

        for (Student st : result) {
            System.out.println(st);
        }
    }
    return result;
}