ZoneId zone = ZoneOffset.of("-5");
//ZoneId zone = ZoneOffset.ofHours(-8);
TimeZone tz = TimeZone.getTimeZone(zone);
int rawoffset = tz.getRawOffset();
String[] str = TimeZone.getAvailableIDs(rawoffset);
List<String> strLst = Arrays.asList(str);
System.out.println("zone ID " + strLst);
zone = ZoneId.of(str[0]);

DateTimeFormatter dft = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
LocalDateTime ldt = LocalDateTime.parse("20180311020000", dft);
System.out.println("ldt " + ldt);
ZonedDateTime zdt = ldt.atZone(zone);
System.out.println("zdt LDt >>" + zdt);