@Test
public void batch() throws SQLException {
    List<Student> students = new ArrayList<>() {
        {
            add(new Student(2231L, "Mon", 1,1, 110));
            add(new Student(2232L, "Tus", 2,0, 1001));
            add(new Student(2233L, "Wen", 3,1, 1110));
        }
    };
    try {
        conn.setAutoCommit(false);
        // todo start
        try (PreparedStatement ps = conn.prepareStatement("insert into students(id, grade, name, gender, score) values (?,?,?,?,?)")) {
            for (Student s : students) {
                ps.setObject(1, s.getId());
                ps.setObject(2, s.getGrade());
                ps.setObject(3, s.getName());
                ps.setObject(4, s.getGender());
                ps.setObject(5, s.getScore());
                ps.addBatch();
            }
            int[] ns = ps.executeBatch();
            for (int n : ns) {
                logger.info(String.valueOf(n));
            }
        }
        // todo end
        conn.commit();
    } catch (SQLException e) {
        conn.rollback();
        logger.info("err: ", e);
    } finally {
        conn.setAutoCommit(true);
    }
}

class Student {
    private Long id;
    private String name;
    private Integer grade;
    private Integer gender;
    private Integer score;
    ......
}