B4J Question RPI4 and display error

[besoft]

Hello,

I would appreciate the info if anyone has encountered the UI issue on an RPI 4 device. An error occurs when starting the application:
...
- UnsupportedOperationException: Unable to open DISPLAY
...

I have the latest official system and Liberica Full JDK 11 arm 32 for Linux installed. Installation was hassle-free. Java versions are also ok. Verified by :
• java -version
• javac -version

Has anyone had a similar problem and how did they solve it?

Thanks for the help.

I apologize if I may have missed the solution somewhere.

 

[aeric]

Do you follow these steps?

Liberica 11.0.11 full JDK install problem in Raspberry Pi 4b

Good evening everyone, I tried to install Liberica 11 from their site (I also tried with 16) in Raspberry Pi 4b. I have read that the full JDK includes the JavaFX too to run UI applications in Raspberry Pi. I failed big time. I followed the installation instructions as described here...

www.b4x.com

 

[aeric]

B4J Packager11 and Raspberry Pi - problem with Release

Hi guys... Need little help... I need to install GUI app on Raspberry Pi ver 4. I installed Bellsoft java 11 (which include javaFx modules). I want to use B4J packager11 for creating release app... Bridge working perfect, I can connect to raspberry - picture below: But - when i run B4J (with...

www.b4x.com

Try login in X11 or X.org session

 

[besoft]

Do you follow these steps?

Liberica 11.0.11 full JDK install problem in Raspberry Pi 4b

Good evening everyone, I tried to install Liberica 11 from their site (I also tried with 16) in Raspberry Pi 4b. I have read that the full JDK includes the JavaFX too to run UI applications in Raspberry Pi. I failed big time. I followed the installation instructions as described here...

www.b4x.com

Thanks for the reply.

Yes, it is installed according to this procedure.

 

[besoft]

So far I haven't found a solution.
But it is interesting that if RPI is launched in the desktop, then the application works. It must be started via the terminal on the RPI.
If I run the application via SSH, I get the error again.