clears thread-local variable containing java.text.dateformat cache . concode_field_sep String PATTERN_RFC1123 concode_elem_sep String[] DEFAULT_PATTERNS concode_elem_sep Date DEFAULT_TWO_DIGIT_YEAR_START concode_elem_sep TimeZone GMT concode_elem_sep String PATTERN_RFC1036 concode_elem_sep ThreadLocal<SoftReference<Map<String,SimpleDateFormat>>> THREADLOCAL_FORMATS concode_elem_sep String PATTERN_ASCTIME concode_field_sep String formatDate concode_elem_sep String formatDate concode_elem_sep Date parseDate concode_elem_sep Date parseDate concode_elem_sep Date parseDate concode_elem_sep SimpleDateFormat formatFor concode_elem_sep SoftReference<Map<String,SimpleDateFormat>> initialValue
void function ( ) { DateFormatHolder . clearThreadLocal ( ) ; }