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https://issues.apache.org/jira/browse/NETBEANS-3234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16949996#comment-16949996
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Matthias Bläsing commented on NETBEANS-3234:
--------------------------------------------
The call-chain on JDK 11 is this:
* Package.getAnnotation(Class<A>)
* Package.getPackageInfo()
* ClassLoader.loadClass(Module, String) (JDK9+)
* ClassLoader.findClass(String, String) (JDK9+)
* ClassLoader.findClass(String)
A naive suggestion: Why not move everything that is currently located in
org.netbeans.ProxyClassLoader.loadClass(String, boolean), apart from the
ClassLoader.resolveClass(Class<?>) calls to a new
org.netbeans.ProxyClassLoader.findClass(String), which delivers the missing
override. Then org.netbeans.ProxyClassLoader.loadClass(String, boolean) would
first call into the new findClass method and optionally resolve the returned
class.
> Apache NetBeans running on JDK 11 cannot access package classes
> ---------------------------------------------------------------
>
> Key: NETBEANS-3234
> URL: https://issues.apache.org/jira/browse/NETBEANS-3234
> Project: NetBeans
> Issue Type: Bug
> Affects Versions: 11.1
> Reporter: Boris Heithecker
> Priority: Blocker
>
> If a package-info element is defined in some package, it cannot be properly
> accessed at runtime:
>
> java.lang.Package p = AnyClass.class.getPackage();
>
> should return a package object representing the actual package-info element
> of that package. It is, for example, used by the JAXB runtime to read
> XmlSchema annotations at package level.
>
> This has been tested in oracle jdk11.0.4. Class java.lang.Package in Java 11
> has a private field called "packageInfo" of type "Class<?>", which should
> hold a reference to the actual package-info class object, i.e.
> AnyPackage.package-info. In NetBeans, always wrongly references
> "java.lang.Package$1PackageInfoProxy", which is a fallback reference set if
> no actual package-info could be found.
>
> The reason is most likely that neither
>
> org.netbeans.JarClassLoader
> nor org.netbeans.ProxyClassLoader
> nor org.netbeans.StandardModule$OneModuleClassLoader (all in
> platform/o.n.bootstrap)
>
> override method "java.lang.ClassLoader.findClass(String name)". The default
> implementation throws an exceptions which causes the above fallback reference
> to be set.
>
> This is a serious issue. If it is not fixed, the platform will not be fully
> comptabile, among others, with the JAXB RI and also JAX-WS RI.
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