Sidonie, It is possible to run two NetLogo instances with the GUI at the same time, but it's unfortunately a little complicated. Because the `App.app` entry point that you'd usually use to startup the GUI is a static variable, it's not as simple as calling `App.app.open()` twice, since you'd just overwrite the first model with the second.
One option would be to investigate launching separate processes to run each NetLogo GUI. If you start a wholly separate process with a different JVM class loader, each will get its own static variables, so you can then run your models through the normal `App.app.open()` method. You then have to deal with the complexity of managing separate processes, though. Another option might be to look at how the LevelSpace extension <https://github.com/NetLogo/LevelSpace> runs separate models. It looks like it runs all models through headless workspaces (which are easy to setup multiple instances of <https://github.com/LaCuneta/NetLogo-ControllingAPI-Sample/blob/master/src/main/SampleHeadless.scala#L31-L51>), but LevelSpace can also display a GUI for the child models with some custom code. This code is spread out over a few classes, but some good starting points to look at might be the `GUIChildModel` class and the `GUIPanel` class. I hope that helps, good luck with your project. -Jeremy On Wednesday, September 25, 2019 at 8:07:29 AM UTC-5, sidonie derenoncourt wrote: > > > Hello, > > I used to control a Netlogo instance with GUI from Java. > But now I would like to control 2 instances (with GUI) from one Java > program. > > Is it possible ? How can I do ? > > Thanks a lot > -- You received this message because you are subscribed to the Google Groups "netlogo-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to netlogo-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/netlogo-devel/a1b0df28-82bc-4b1f-ae19-cf7063ed3fb6%40googlegroups.com.
