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WARNING: environment variable DISPLAY is not set (netbeans)

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I was trying to install Netbeans in Xubuntu. I had installed Netbeans using Snapd.

sudo snap install netbeans --classic

I was trying to start Netbeans then I got an error which was looking like this

netbeans

can't find JDK (I completely don't remember the error but I had fixed it)

I had solved it this way

$which javac
/usr/bin/javac
netbeans_jdkhome='/usr/bin/javac'

Then when I try to start netbeans again I get the error.

netbeans
/snap/netbeans/50/netbeans/platform/lib/nbexec: WARNING: environment variable DISPLAY is not set

I had quick search in DuckDuckGo. I didn't search in Google for "safety". I couldn't find any related problem in DuckDuckGo.

Note : I was using Java in Android Studio. But I couldn't find java in my system that's why I had to install it again. sudo apt-get install openjdk-16-jdk-headless

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The problem is GUI-related (4 comments)

1 answer

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I had installed default-jdk, jre and java although I didn't get any GUI of netbeans. I was thinking what was missing. While visiting lots of site I had seen oracle (Article) then I remembered I didn't install Oracle after installing Oracle I can access GUI of netbeans.

sudo apt-get install oracle-java16-installer
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