.java

@Test
public void test_exception_flow_control() {
    Calendar calendar = Calendar.getInstance();
    calendar.set(2003, 11, 13, 18, 30, 02);
    calendar.setTimeZone(TimeZone.getTimeZone("UTC"));
    calendar.set(Calendar.MILLISECOND, 250);
    Instant expected = calendar.toInstant();

    ZoneId UTC = ZoneId.of("UTC");
    DateTimeFormatter fractionFormat = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSSXXX", Locale.US);

    String date = "2003-12-13T18:30:02.25+01:00";
    Instant actual = LocalDateTime.parse(date, fractionFormat).atZone(UTC).toInstant();
    assertEquals(expected, actual);
}