[LOG4J2-1279] NullPointerException in FastDateParser$TimeZoneStrategy

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.5
• Fix Version/s: 2.7
• Component/s: Core, Layouts

Environment

JRE 8

• Assignee: Remko Popma
• Reporter: Tony Baines
• Created: 18/Feb/16 14:52
• Updated: 31/Jul/16 07:06
• Resolved: 31/Jul/16 07:06

Description

This is a duplicate of the bug in FastDateParser in commons-lang3 LANG-1186

It manifests for me on a Java 8 runtime in Europe/London GMT locale when I specify a custom date format in PatternLayout with the 'Z' suffix e.g.

<PatternLayout pattern="%d{yyyy-MM-dd'T'HH:mm:ss.SSSZ}|%p|thread:%t|%c{1}|%m%n" />

Caused by: java.lang.NullPointerException
	at org.apache.logging.log4j.core.util.datetime.FastDateParser$TimeZoneStrategy.<init>(FastDateParser.java:858)
	at org.apache.logging.log4j.core.util.datetime.FastDateParser.getLocaleSpecificStrategy(FastDateParser.java:662)
	at org.apache.logging.log4j.core.util.datetime.FastDateParser.getStrategy(FastDateParser.java:628)
	at org.apache.logging.log4j.core.util.datetime.FastDateParser.init(FastDateParser.java:216)
	at org.apache.logging.log4j.core.util.datetime.FastDateParser.<init>(FastDateParser.java:187)
	at org.apache.logging.log4j.core.util.datetime.FastDateParser.<init>(FastDateParser.java:147)
	at org.apache.logging.log4j.core.util.datetime.FastDateFormat.<init>(FastDateFormat.java:101)
	at org.apache.logging.log4j.core.util.datetime.FastDateFormat.<init>(FastDateFormat.java:81)
	at org.apache.logging.log4j.core.util.datetime.FastDateFormat$1.createInstance(FastDateFormat.java:61)
	at org.apache.logging.log4j.core.util.datetime.FastDateFormat$1.createInstance(FastDateFormat.java:58)
	at org.apache.logging.log4j.core.util.datetime.FormatCache.getInstance(FormatCache.java:82)
	at org.apache.logging.log4j.core.util.datetime.FastDateFormat.getInstance(FastDateFormat.java:140)
	at org.apache.logging.log4j.core.pattern.DatePatternConverter.createFormatter(DatePatternConverter.java:176)
	at org.apache.logging.log4j.core.pattern.DatePatternConverter.<init>(DatePatternConverter.java:132)
	at org.apache.logging.log4j.core.pattern.DatePatternConverter.newInstance(DatePatternConverter.java:144)

Issue Links

• is related to: LOG4J2-1102 Follow up: remaining tasks related to introducing FastDateFormat
• links to: GitHub Pull Request #24