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: 4.3.0.Beta1 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.