I have the same problem when upgrade my IDEA to 2019.3.1.
And the Biao's solution works for me too.

Best,
Jark

On Thu, 21 Nov 2019 at 22:23, 刘建刚 <liujiangangp...@gmail.com> wrote:

> Thank you very much. It works for me.
>
> > 在 2019年11月14日,下午1:06,Biao Liu <mmyy1...@gmail.com> 写道:
> >
> > Hi,
> >
> > I have encountered the same issue when setting up a dev environment.
> >
> > It seems that the my Intellij (2019.2.1) unexpectedly activates java11
> > profile of maven. It doesn't match the Java compiler (JDK8). I'm not sure
> > why it happened silently.
> >
> > So for me, the solution is "Intellij" -> "View" -> "Tool Windows" ->
> > "Maven" -> "Profiles" -> uncheck the "java11" -> reimport maven project.
> >
> > Thanks,
> > Biao /'bɪ.aʊ/
> >
> >
> >
> > On Mon, 4 Nov 2019 at 18:01, OpenInx <open...@gmail.com> wrote:
> >
> >> Hi
> >> I met the same problem before. After some digging,  I find that the idea
> >> will detect the JDK version
> >> and choose whether to use the jdk11 option to run the flink maven
> building.
> >> if you are in jdk11 env,  then
> >> it will add the option --add-exports when maven building in IDEA.
> >>
> >> For my case,  I was in IntelliJIdea2019.2 which depends on the jdk11,
> and
> >> once I re-import the flink
> >> modules then the IDEA will add the --add-exports flag even if  I removed
> >> all the flags in .idea/compile.xml
> >> explicitly.  I noticed that the Intellij's JDK affected the flink maven
> >> building, so I turned to use the Intellij with JDK8
> >> bundled,  then the problem was gone.
> >>
> >> You can verify it, and if  it's really the same. can just replace your
> IDEA
> >> with the pkg suffix with "with bundled JBR 8" in
> >> here [1].
> >> Say if you are using MacOS, then should download the package "2019.2.4
> for
> >> macOS with bundled JBR 8 (dmg)"
> >>
> >> Hope it works for you
> >> Thanks.
> >>
> >> [1]. https://www.jetbrains.com/idea/download/other.html
> >>
> >>
> >> On Mon, Nov 4, 2019 at 5:44 PM Till Rohrmann <trohrm...@apache.org>
> wrote:
> >>
> >>> Try to reimport that maven project. This should resolve this issue.
> >>>
> >>> Cheers,
> >>> Till
> >>>
> >>> On Mon, Nov 4, 2019 at 10:34 AM 刘建刚 <liujiangangp...@gmail.com> wrote:
> >>>
> >>>>      Hi, I am using flink 1.9 in idea. But when I run a unit test in
> >>> idea.
> >>>> The idea reports the following error:"Error:java: 无效的标记:
> >>>> --add-exports=java.base/sun.net.util=ALL-UNNAMED".
> >>>>      Everything is ok when I use flink 1.6. I am using jdk 1.8. Is it
> >>>> related to the java version?
> >>>>
> >>>
> >>
>
>

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