Commons-lang DateUtils 사용방법

역시 쓸만하다. ㅋㅋㅋ
@Test public void dateUtilsTest() throws Exception { String[] parsePatterns = {"yyyyMMdd"}; String year = "2012"; String month = "1"; String day = "9"; java.util.Date parseDate; parseDate = DateUtils.parseDate( year + StringUtils.leftPad(month, 2, '0') + StringUtils.leftPad(day, 2, '0'), parsePatterns ); assertThat(DateFormatUtils.format(parseDate, "yyyyMMdd"), is("20120109")); java.util.Date addMonths; addMonths = DateUtils.addMonths(parseDate, -12); assertThat(DateFormatUtils.format(addMonths, "yyyyMMdd"), is("20110109")); }