[jira] [Created] (SLING-7312) Java 9 requires javax.annotation to be added to the classpath

["Robert Munteanu (JIRA)" <ji...@apache.org>]

Robert Munteanu created SLING-7312:
--------------------------------------

             Summary: Java 9 requires javax.annotation to be added to the classpath
                 Key: SLING-7312
                 URL: https://issues.apache.org/jira/browse/SLING-7312
             Project: Sling
          Issue Type: Bug
          Components: Launchpad
            Reporter: Robert Munteanu
             Fix For: Starter 10


When running on Java 9 post SLING-7186 startup fails due to the {{javax.annotation}} package no longer being exported by default, e.g.

{noformat}org.osgi.framework.BundleException: Unable to resolve org.apache.sling.installer.core [2](R 2.0): missing requirement [org.apache.sling.installer.core [2](R 2.0)] osgi.wiring.package; (osgi.wiring.package=javax.annotation) Unresolved requirements: [[org.apache.sling.installer.core [2](R 2.0)] osgi.wiring.package; (osgi.wiring.package=javax.annotation)]
	at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:4149)
	at org.apache.felix.framework.Felix.startBundle(Felix.java:2119)
	at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1373)
	at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
	at java.base/java.lang.Thread.run(Thread.java:844){noformat}

The interesting part here is that the {{javax.annotation}} classes that are required - for instance {{javax.annotation.CheckForNull}} are _not_ part of the JDK-provided {{javax.annotation}} package, they must come from another jar. In fact, we don't have that Jar deployed in the starter, but instead the JDK provides:

{noformat}
Generated.class
PostConstruct.class
PreDestroy.class
Resource.class
Resources.class
{noformat}

In a sense, this is very close to the root cause of SLING-7135 - solving one might solve both but the symptoms are very different so raising it separately.



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