### Question:
DateUtil { public static String printDate(Date date) { return date == null ? "" : ISODateTimeFormat.dateTimeNoMillis().withZoneUTC().print(date.getTime()); }  static String printDate(Date date); static String printYear(Date date); static DateTime parseYearUTC(String dateString); static DateTime parseYearMonthUTC(String dateString); static DateTime parsePatternUTC(String dateString, String pattern); static DateTime parseDateUTC(String eventDate); static String splitPossibleRange(String eventDate); static String nowDateString();  }### Answer:
@Test public void formatDate() { assertThat(DateUtil.printDate(new Date(0)), is("1970-01-01T00:00:00Z")); }