### Question:
Formatter { public static String f(Date date, String P) { return f(date.getTime(), P); }  static String now(String P); static String f(Date date, String P); static String f(long timestamp, String P); static String f(LocalDateTime dateTime, String P); final static String P6; }### Answer:
@Test public void testFormatLocalDateTime() { System.err.println(Formatter.f(LocalDateTimeHelper.toLocalDateTime(new Date().getTime()), Formatter.P.P6)); System.err.println(DateFormatUtils.format(1565366400000L,"yyyy-MM-dd")); }