JIRA start fail with cannot be cast to java.lang.Comparable

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  1. After installing JIRA, system is not accessible trough the interface.

The following appears in the atlassian-jira.log:

2012-04-20 15:58:02,674 main ERROR      [atlassian.plugin.manager.PluginEnabler] Unable to enable plugin com.atlassian.sal.jira
java.lang.ClassCastException: [Ljava.lang.String; cannot be cast to java.lang.Comparable
	at org.apache.felix.framework.resolver.CandidateComparator.compare(CandidateComparator.java:46)
	at org.apache.felix.framework.resolver.CandidateComparator.compare(CandidateComparator.java:26)
	at java.util.TreeMap.compare(TreeMap.java:1188)


Java Version is 1.7 or up (older JIRA versions should not work correctly with newer JAVA versions);

    Java Version                                  : 1.7.0_03 - Oracle Corporation



Downgrade the JAVA version in order to match with the Supported Platforms of your JIRA version.










Last modified on Mar 30, 2016

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