Unexpected ClassnotFoundException on reflective Class#getMethod

[Dawid Weiss]

Ok, got it to work by patching the default module this package comes from:

-Xpatch:java.annotations.common=mods\javax.annotation.priority at 1.0.jar

The name of the module was kind of misleading (different than packages
inside). I kept trying to patch javax.annotation... also, I couldn't
get it to work with upgrademodulepath, no matter how hard I tried
(copied java.annotations.common.jmod verbatim, created a modular jar
out of it). Everything falls to pieces with:

> java -upgrademodulepath mods -cp . Test
Error occurred during initialization of VM
java.lang.module.ResolutionException: Unable to compute the hash of
module java.base
        at java.lang.module.Resolver.fail(java.base at 9-ea/Resolver.java:796)
        at java.lang.module.Resolver.checkHashes(java.base at 9-ea/Resolver.java:457)
        at java.lang.module.Resolver.finish(java.base at 9-ea/Resolver.java:274)
        at java.lang.module.Configuration.<init>(java.base at 9-ea/Configuration.java:187)
        at java.lang.module.Configuration.resolveRequiresAndUses(java.base at 9-ea/Configuration.java:346)
        at jdk.internal.module.ModuleBootstrap.boot(java.base at 9-ea/ModuleBootstrap.java:217)
        at java.lang.System.initPhase2(java.base at 9-ea/System.java:1916)

Dawid

On Thu, Apr 7, 2016 at 11:40 AM, Dawid Weiss <dawid.weiss at gmail.com> wrote:
>> thank you for the detailed response! I am reassured that there is a
>> reasonable technical solution, yet this seems like quite a burden for
>> end users of JavaSE embedding any of these popular libraries.
>
> I just hit the same issue with JBoss RestEasy. We have an embedded
> server (not EE class, a simple servlet with some web services
> exposed), but RestEasy relies on annotations in jaxrs
> (javax.annotation.*, javax.ws.rs.*). I tried to somehow make it work,
> but failed so far. Please correct me if I'm wrong, but from my
> investigation of this list archives it seems that it's impossible to
> simply "add" the JAR with the missing annotations to classpath? I need
> to compile those annotations to a module and then add the module,
> right?
>
> If so then it makes it extra difficult to have an interoperable build
> script (and tests) for Java 8 and 9.
>
> Dawid
>
>
> On Tue, Apr 5, 2016 at 1:24 PM, Alan Bateman <Alan.Bateman at oracle.com> wrote:
>> On 05/04/2016 12:09, Sanne Grinovero wrote:
>>>
>>> Hi Alan,
>>> thank you for the detailed response! I am reassured that there is a
>>> reasonable technical solution, yet this seems like quite a burden for
>>> end users of JavaSE embedding any of these popular libraries.
>>>
>>> I'll be looking forward to hear more about this, in the meantime I'll
>>> post my doubts to the Java Platform Module System EG.
>>
>> I don't know if you saw the recent change to JEP 261 [1] but I think this
>> should make things easier.
>>
>> -Alan
>>
>> [1] http://mail.openjdk.java.net/pipermail/jigsaw-dev/2016-April/007209.html