[LANG-1192] FastDateFormat does not support the week-year component (uppercase 'Y')

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4
• Fix Version/s: 3.5
• Component/s: lang.time.*
• Labels: easytest
• Assignee: Charles Honton
• Reporter: Dominik Stadler
• Created: 10/Dec/15 08:16
• Updated: 19/Oct/16 07:01
• Resolved: 25/Dec/15 20:50

Description

The Java SimpleDateFormat supports two year-components, 'y' for normal year and 'Y' for 'Week year', see http://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html

However when we try to use FastDateFormat to parse a format which uses the week-year, it fails with an exception

java.lang.IllegalArgumentException: Illegal pattern component: YYYY
	at org.apache.commons.lang3.time.FastDatePrinter.parsePattern(FastDatePrinter.java:282)
	at org.apache.commons.lang3.time.FastDatePrinter.init(FastDatePrinter.java:149)
	at org.apache.commons.lang3.time.FastDatePrinter.<init>(FastDatePrinter.java:142)
	at org.apache.commons.lang3.time.FastDateFormat.<init>(FastDateFormat.java:384)
	at org.apache.commons.lang3.time.FastDateFormat.<init>(FastDateFormat.java:369)
	at org.apache.commons.lang3.time.FastDateFormat$1.createInstance(FastDateFormat.java:91)
	at org.apache.commons.lang3.time.FastDateFormat$1.createInstance(FastDateFormat.java:88)
	at org.apache.commons.lang3.time.FormatCache.getInstance(FormatCache.java:82)
	at org.apache.commons.lang3.time.FastDateFormat.getInstance(FastDateFormat.java:119)

Simple unit test to reproduce this:

    @Test
    public void testCommonsLang() {
    	Date date = new Date();

    	Format dateFormat = new SimpleDateFormat("YYYY");
		assertNotNull(dateFormat.format(date));

        dateFormat = FastDateFormat.getInstance("YYYY");
		assertNotNull(dateFormat.format(date));
    }

Issue Links

• is blocked by: LANG-1194 Travis-ci build fails occasionally with "Killed" message
• is duplicated by: LANG-1209 FastDateFormat does not support the 'u' pattern element