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Java 8 and Java 9 interoperability [message #1770208]

Wed, 09 August 2017 06:56

Benjamin Brandl

Messages: 1
Registered: August 2017

Junior Member

Java 9 will be released on the 21st of September. The eclipse IDE already supports this new version. But during testing a rcp application I ran into problems.

To run an rcp application with java 9, some parameters need to be added to the ini file:

--add-modules=java.se.ee
--add-opens=java.base/java.lang=java.xml.bind
--add-opens=java.base/java.util=java.xml.bind

Despite some reflection warnings from some libraries, the application runs fine.

But with this modification, the application won't start anymore with java 8 as the new parameters are unknown there.

Is there any way to run a rcp application with both java 8 and java 9.

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Re: Java 8 and Java 9 interoperability [message #1773290 is a reply to message #1770208]

Tue, 26 September 2017 07:46

Andreas Buchen

Messages: 123
Registered: July 2009

Senior Member

I am also interested in a solution. The users of my RCP do not care about Java 8 vs. Java 9. (I actually have enough troubles explaining 32bit vs. 64bit as it depends on the Java VM not the Operating System).

Looking at Bug 493761, the Launcher would not pass the Java 9 parameters ("--add-modules") to a Java 8 VM, but that was behavior removed again.

Have you tried the VM option to ignore unrecognized parameters?

-XX:+IgnoreUnrecognizedVMOptions

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