Timestamp convert [duplicate]

Answer 1

https://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html. S - its milliseconds, which means max value its 999. If you write S more than 3 times its just adds leading zeros.

But you can use java.time where S its second part:

    final String input = "2019-10-08-03.57.14.694695";
    final TemporalAccessor ta = DateTimeFormatter.ofPattern("yyyy-MM-dd-HH.mm.ss.SSSSSS").parse(input);
    final DateTimeFormatter newFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd hh:mm:ss.SSSSSS", Locale.ENGLISH);
    final String result = newFormatter.format(ta);