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I run the NetBeans 8 beta with the JDK 9 on Mac OS X. The NetBeans does not start with the error: -------------------- alex$ Unrecognized VM option 'MaxPermSize=384m' Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit. -------------------- JDK: java version "1.9.0-ea-fastdebug" Java(TM) SE Runtime Environment (build 1.9.0-ea-fastdebug-b03) Java HotSpot(TM) 64-Bit Server VM (build 25.0-b62-fastdebug, mixed mode) NetBeans: netbeans-8.0beta-201401141042-javase.zip
I can confirm this behaviour on Mac and Linux. On Windows it works properly.
Reassigning to JDK problems. JDK should behave on all platforms identically.
What is the JDK issue number?
https://bugs.openjdk.java.net/browse/JDK-8038827
See also issue 243569 for NB launcher to start handling the JDK9 case.