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error running a java project [message #1821414] Wed, 12 February 2020 17:43 Go to next message
Renato Zuliani is currently offline Renato ZulianiFriend
Messages: 1
Registered: February 2020
Junior Member
J've downloaded eclipse 2019-12 ide for java developers
and the java virtual environment jre1.8.0_241
both put in c:\programs\

j've downloaded also library rxdx (source unzipped in the lib folder of project or inside jre1.8.0_241) to permit comunication between the java project and an usb device such as plc connectec on pc's usb

running the project in eclipse it starts but clicking in a graphic push button of java graphic interface there is the error:
Exception in thread "main" java.lang.IllegalArgumentException: null source
at java.util.EventObject.<init>(Unknown Source)

someone can says why it might happen
thanks
Re: error running a java project [message #1821423 is a reply to message #1821414] Wed, 12 February 2020 19:58 Go to previous message
Ed Merks is currently offline Ed MerksFriend
Messages: 31494
Registered: July 2009
Senior Member
It's best to use the debugger to track this down yourself.

Ed Merks
Professional Support: https://www.macromodeling.com/
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