Formatter is configured with strings of SimpleDateFormat (yyyy-MM-DD) or % percent format (%Y-%m-%d) specifiers. SimpleDateFormat is discouraged because most other parts of das2 use the shorter form. This does not support formats with seconds but no hours and minutes, like "$Y $j $S"
yyyy-JJJ
yyyy-MM-dd (JJJ)
HH:mm:ss.SSSSSS
HH:mm:ss.SSSSSSSSS
returns a TimeDatumFormatter suitable for the specified scale and context. Context may be null to indicate that the formatted string will be interpreted outside of any context.