public class Main {
    public static final String URL = "jdbc:h2:tcp://localhost/~/demo_jdbc";
    public static final String USER = "demo_user";
    public static final String PASSWORD = "demo";

    public static void main(String... args) {
        Main main = new Main();
        main.insert(10, "山田　たろう");
        //...
    }

    public void insert(int id, String name) {
        try (Connection conn = DriverManager.getConnection(URL, USER, PASSWORD);) {
            String sql = "INSERT INTO TBL_ES0206 (ID, DATA, REG_DAY, UPD_DAY) VALUES (?, ?, SYSDATE, SYSDATE)";
            try (PreparedStatement pstmt = conn.prepareStatement(sql);) {
                pstmt.setInt(1, id);
                pstmt.setString(2, name);
                conn.commit();
            } catch (SQLException ex) {
                ex.printStackTrace();
                if (conn!= null) {
                    conn.rollback();
                }
            }
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
    }
}