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Java error on linux

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Finally got around to updating my Linux install to Linux mint 19.2

And got the following message when running HD (Build 20190826):

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.jruby.ext.posix.util.FieldAccess (file:/home/johnbear/Apps/HeroDesigner/HD6.jar) to field java.io.FileDescriptor.handle
WARNING: Please consider reporting this to the maintainers of org.jruby.ext.posix.util.FieldAccess
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

I have not tested any older versions or tried rebuilding from source (Last update: May 30, 2019 )

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Those are not errors, they’re warnings.  That’s not being pedantic - they won’t impact any functionality and are simply warnings of potential deprecation that will likely not occur within the lifetime of the application.

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