Re: [PROBLEM] Java 9 ClassLoader and trying to load module java.se.se

[Robert Scholte]

I guess we need to dive into MethodHandles.Lookup[1] or reconsider  
MultiRelease JAR


[1]  
http://download.java.net/java/jigsaw/docs/api/java/lang/invoke/MethodHandles.Lookup.html


On Sat, 06 May 2017 09:24:51 +0200, Tibor Digana   
wrote:



Hi,

@Robert I created branch [1] and added Java 9 method call  
*findClass(module,
cls)* to our *ClassLoader*, see the diff [2] and there is my playground  
for

my debugging purposes.

After debugging this code does not load *javax.xml.ws.Holder*.
This method is protected and if you call *setAccessible(true) *the JVM
throws exception because this method cannot be called in *java.lang* or
*java.base* module.

I guess this class loader must be compiled in java 9 and the protected
method extended and then maybe the module *"java.se.ee  
"*

would be loaded.

Do you have any idea to solve this problem and load *javax.xml.ws.Holder*
properly?

[1]
https://git-wip-us.apache.org/repos/asf?p=maven-surefire.git;a=shortlog;h=refs/heads/SUREFIRE-1265_2

[2]
https://git-wip-us.apache.org/repos/asf?p=maven-surefire.git;a=commitdiff;h=bce51369e3563ed95c91346cd89c80bac7716c10

Cheers
Tibor


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Re: [PROBLEM] Java 9 ClassLoader and trying to load module java.se.se

[Romain Manni-Bucau]

Hi Tibor,

(If it helps) I guess detecting you run on java 9 you can add some
--add-opens on the CLI as a workaround. Otherwise a double compilation can
be needed or just provide a jar with these classes in the classloader which
will override the JVM ones - this is how it should work for the deprecated
jaxb typically for instance.


Romain Manni-Bucau
@rmannibucau  |  Blog
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LinkedIn  | JavaEE Factory


2017-05-06 9:24 GMT+02:00 Tibor Digana :

> Hi,
>
> @Robert I created branch [1] and added Java 9 method call
> *findClass(module,
> cls)* to our *ClassLoader*, see the diff [2] and there is my playground for
> my debugging purposes.
>
> After debugging this code does not load *javax.xml.ws.Holder*.
> This method is protected and if you call *setAccessible(true) *the JVM
> throws exception because this method cannot be called in *java.lang* or
> *java.base* module.
>
> I guess this class loader must be compiled in java 9 and the protected
> method extended and then maybe the module *"java.se.ee  >"*
> would be loaded.
>
> Do you have any idea to solve this problem and load *javax.xml.ws.Holder*
> properly?
>
> [1]
> https://git-wip-us.apache.org/repos/asf?p=maven-surefire.
> git;a=shortlog;h=refs/heads/SUREFIRE-1265_2
>
> [2]
> https://git-wip-us.apache.org/repos/asf?p=maven-surefire.
> git;a=commitdiff;h=bce51369e3563ed95c91346cd89c80bac7716c10
>
> Cheers
> Tibor
>