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https://issues.apache.org/jira/browse/NETBEANS-5500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17347791#comment-17347791
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Rangi Keen commented on NETBEANS-5500:
--------------------------------------
JDK 16 will throw a runtime exception and JDK 17 will no longer allow this
reflective access. See [A peek into Java 17: Continuing the drive to
encapsulate the Java runtime
internals|https://blogs.oracle.com/javamagazine/java-runtime-encapsulation-internals#anchor_7]
for details.
> URLStreamFactory registration violates JDK9+ reflection restrictions
> --------------------------------------------------------------------
>
> Key: NETBEANS-5500
> URL: https://issues.apache.org/jira/browse/NETBEANS-5500
> Project: NetBeans
> Issue Type: Bug
> Components: platform - Module System
> Affects Versions: 9.0
> Reporter: Jaroslav Tulach
> Assignee: Svatopluk Dedic
> Priority: Major
> Labels: VSNetBeans
> Fix For: Next
>
>
> If you run NetBeans on JDK9+ you'll see:
> {code:java}
> WARNING: An illegal reflective access operation has occurred
> WARNING: Illegal reflective access by
> org.netbeans.ProxyURLStreamHandlerFactory
> (file:/netbeans/nbbuild/netbeans/platform/lib/boot.jar) to field
> java.net.URL.handler
> WARNING: Please consider reporting this to the maintainers of
> org.netbeans.ProxyURLStreamHandlerFactory
> WARNING: Use --illegal-access=warn to enable warnings of further illegal
> reflective access operations
> WARNING: All illegal access operations will be denied in a future release
> {code}
> There is a new API that one can use to register (most of) the factories on
> JDK9+:
> [https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/net/spi/URLStreamHandlerProvider.html]
>
> We should use it as once the JDK is going to ban the illegal access
> operations and then it is better to be ready.
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