2 JavaFX applets in the same JVM

Stephen F Northover steve.x.northover at oracle.com
Tue Jul 8 19:40:57 UTC 2014

This would imply that there was more than on distinguished GUI thread 
per process.  JavaFX runs in the native GUI thread by design and more 
than one GUI thread is not supported in JavaFX and on some platforms 
(ie. Mac).


On 2014-07-08, 3:31 PM, Kevin Rushforth wrote:
> > Is running 2 JavaFX applets in the same JVM supported?
> No, this is not supported. RT-29969 (and the non-public RT-32321) is 
> about running multiple applets from the same web page, each in their 
> own JVM. By design, JavaFX runs each applet in its own VM. It is very 
> unlikely that we would ever add the ability to run more than JavaFX 
> applet in the same VM.
> -- Kevin
> ngalarneau at ABINITIO.COM wrote:
>> Hello,
>> What is the status of running 2 JavaFX applets in the same JVM 
>> (separate_jvm = false)?
>> When we try to load 2 applets into the same JVM we get a runtime 
>> error (I think it was class loader related).
>> When I searched in jira I found RT-29969 (the 2 applet test it refers 
>> to may or may not be in the same JVM) which points to RT-32321 which 
>> seems to be private (it gives me an error when I try to access it).
>> Is running 2 JavaFX applets in the same JVM supported?
>> If not, is that a bug or a feature?
>> Thanks,
>> Neil
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