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Re: [cross-project-issues-dev] Oxygen.1aRC1: Maven fails with org.codehaus.plexus.classworlds.launcher.Launcher when running with JDK 9

> I believe we can provide a fix today.

Hi Fred

Who is "we"? Which project? The Platform/JDT is done. RC2 was last Friday.

Dani



From:        Fred Bricon <fbricon@xxxxxxxxx>
To:        Cross project issues <cross-project-issues-dev@xxxxxxxxxxx>
Date:        05.10.2017 16:58
Subject:        Re: [cross-project-issues-dev] Oxygen.1aRC1: Maven fails with org.codehaus.plexus.classworlds.launcher.Launcher when running with JDK 9
Sent by:        cross-project-issues-dev-bounces@xxxxxxxxxxx




Hi, 

we just found out the cause of bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=522333, which prevents you from running Maven builds on Java 9 projects on Windows specifically.

Java 9 no longer supports classpaths sent with the form /c:/whatever (worked in previous Java versions) as sent by m2e.
I believe we can provide a fix today. Is it possible to delay the Oxygen.1a RC2 aggregation builds to tonight?

Fred


On Wed, Oct 4, 2017 at 10:18 AM, Arthur van Dorp <Arthur.vanDorp@xxxxxxxxxxxxxxxx> wrote:
Ah, Java Development Tools Launching Support is at 3.9.50.v2070925-1051 in that latest EPP build which might just not yet include the fix from the same day.

 

Von: cross-project-issues-dev-bounces@xxxxxxxxxxx[mailto:cross-project-issues-dev-bounces@xxxxxxxxxxx] Im Auftrag von Fred Bricon
Gesendet:
Mittwoch, 4. Oktober 2017 16:04


An:
Cross project issues
Betreff:
Re: [cross-project-issues-dev] Oxygen.1aRC1: Maven fails with org.codehaus.plexus.classworlds.launcher.Launcher when running with JDK 9

 

I'll see if I can workaround it on m2e's side for RC2. Not promising any miracles though.

 

Fred

 

On Wed, Oct 4, 2017 at 9:55 AM, Arthur van Dorp <Arthur.vanDorp@xxxxxxxxxxxxxxxx> wrote:

Thanks. Didn’t come up in my bugzilla searches as it is marked fixed.

Doesn’t seem fixed to me.

 

Regards

Arthur

 

Von: cross-project-issues-dev-bounces@xxxxxxxxxxx[mailto:cross-project-issues-dev-bounces@xxxxxxxxxxx] Im Auftrag von Fred Bricon
Gesendet:
Mittwoch, 4. Oktober 2017 15:48
An:
Cross project issues
Betreff:
Re: [cross-project-issues-dev] Oxygen.1aRC1: Maven fails with org.codehaus.plexus.classworlds.launcher.Launcher when running with JDK 9

 

You've hit https://bugs.eclipse.org/bugs/show_bug.cgi?id=522333

 

On Wed, Oct 4, 2017 at 9:26 AM, Arthur van Dorp <Arthur.vanDorp@xxxxxxxxxxxxxxxx> wrote:

Hi all

 

As the RC2 window already closes and the final Oxygen.1a contributions are due soon, I bring up the following issue directly on this list:

 

On the EPP RC1 with only a JDK 9 as installed JRE, calling Maven commands fails with

Error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher

Caused by: java.lang.ClassNotFoundException: org.codehaus.plexus.classworlds.launcher.Launcher

Switching to a JDK 8 resolves the problem.

 

Steps to reproduce:

*New workspace

*File/New Other…/Maven/Maven Project/Create dummy project

*Select project folder/Right click/Run As…/Maven clean

 

I’ve reproduced this under Windows 7 and the Scout EPP package. To make sure it isn’t a Scout issue I’ve tested with a post RC1 EPP package of Eclipse Java too.

 

Has anyone else experienced this? Is anyone else able to reproduce it?

 

Thanks and regards

Arthur

 


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