c.set(2004, Calendar.DECEMBER, 12, 20, 0);
c.set(Calendar.SECOND, 37);
c.set(Calendar.MILLISECOND, 23);
c.setTimeZone(cet);
String s = cachedFormat.format(c.getTime());
assertEquals("2004-December-12 20:00:37,23 GMT+01:00", s);
c.set(2005, Calendar.JANUARY, 1, 0, 0);
c.set(Calendar.SECOND, 13);
c.set(Calendar.MILLISECOND, 905);