[LANG-1680] FastDateFormat does not support the 'L'-Pattern from SimpleDateFormat

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.12.0
• Fix Version/s: 3.12.0
• Component/s: lang.time.*

Environment

All

• Assignee: Unassigned
• Reporter: Michael Krause
• Created: 17/Jan/22 12:56
• Updated: 15/May/22 19:15
• Resolved: 15/May/22 19:15

Description

The MMM-Pattern in SimpleDateFormat is context-sensitve. 

If you execute

{{FastDateFormat.getInstance("MMMyy", Locale.GERMAN).format(Calendar.getInstance())}}

You get "Jan.22". Observer the dot after 'Jan'.  If you do the equivalent with SimpleDateFormat with 'LLLyy' instead as the pattern 

{{new SimpleDateFormat("LLLyy", Locale.GERMANY).format(Calendar.getInstance().getTime());}}

you get "Jan22" as expected. 

 

If the 'L'-Pattern is used with FastDateFormat, it throws an IllegalArgumentException

java.lang.IllegalArgumentException: Illegal pattern component: LLL    at org.apache.commons.lang3.time.FastDatePrinter.parsePattern(FastDatePrinter.java:311) 

The Source shows that the L-Pattern is not implemented.