[jbosstools-issues] [JBoss JIRA] (JBIDE-19049) Enable JBoss servers to run with java 9

[Rob Stryker (JIRA)]

    [ https://issues.jboss.org/browse/JBIDE-19049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13038694#comment-13038694 ] 

Rob Stryker commented on JBIDE-19049:
-------------------------------------

Works for me with the flag removed, but, still... Eclipse will not be able to launch any java9 apps until significant changes to JDT are made, and, more importantly, until the Java9 JDK itself is at the point where a Java9 can inspect another Java9, and, possibly, the entire concept of a classpath changes in Eclipse based on the new jimage format. 

> Enable JBoss servers to run with java 9
> ---------------------------------------
>
>                 Key: JBIDE-19049
>                 URL: https://issues.jboss.org/browse/JBIDE-19049
>             Project: Tools (JBoss Tools)
>          Issue Type: Feature Request
>          Components: server
>    Affects Versions: 4.2.2.Final
>            Reporter: Martin Malina
>            Assignee: Rob Stryker
>              Labels: Java9
>             Fix For: LATER
>
>
> I briefly tried to use java 9 for our tooling and to run servers.
> I downloaded it from here:
> https://jdk9.java.net/download/
> {code}
> nattura:8.0.2 rasp$ java -version
> java version "1.9.0-ea"
> Java(TM) SE Runtime Environment (build 1.9.0-ea-b45)
> Java HotSpot(TM) 64-Bit Server VM (build 1.9.0-ea-b45, mixed mode)
> {code}
> I use OS X 10.10 Yosemite.
> There are a couple of problems:
> 1. When I add a WildFly 8.2 server into JBDS 8.0.2, I cannot change the runtime to use java 9 - it seems we restrict that.
> 2. Even if I could, we need to make sure -XX:MaxPermSize is not used in the server launch command. When I tried to run WildFly 8.2 from the terminal, it wouldn't work unless I removed the max perm size argument. Apparently java 9 does not just ignore this parameter (as java 8 did), but it does not allow it at all.
> {code}
> nattura:bin rasp$ ./standalone.sh 
> =========================================================================
>   JBoss Bootstrap Environment
>   JBOSS_HOME: /Users/rasp/jbossqa/runtimes/wildfly-8.2.0.Final
>   JAVA: /Library/Java/JavaVirtualMachines/jdk1.9.0.jdk/Contents/Home/bin/java
>   JAVA_OPTS:  -server -Xms64m -Xmx512m -XX:MaxPermSize=256m -Djava.net.preferIPv4Stack=true -Djboss.modules.system.pkgs=org.jboss.byteman -Djava.awt.headless=true
> =========================================================================
> Unrecognized VM option 'MaxPermSize=256m'
> Error: Could not create the Java Virtual Machine.
> Error: A fatal exception has occurred. Program will exit.
> {code}
> Of course it's questionable if we should allow java 9 for current servers at all as they don't support it officially. But I would say there is no need to restrict it if it works.



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