Problems installing Open JDK 17

c0mm4nd3rk33n · 24 October 2025 16:53

Hello,

I’m having trouble installing the “openjdk-17-jdk-headless” package via apt on the current DietPi. What would be the easiest way to install Java 17? I would like to install and test the “Thingsboard” software, but it requires Java 17. I tried openjdk-21 and it does not work.

I get the message:
Error: Package openjdk-17-jdk-headless cannot be found.

Do I need to add another repo or adjust a configuration somewhere so I can access a different Debian repo?

Thank you in advance.

Joulinar · 24 October 2025 17:17

You could have started to fill the troubleshooting template

c0mm4nd3rk33n · 24 October 2025 17:39

You are right, sorry, this was my mistake. I thought everything important was in my text, I spent several hours today searching for solutions on google, but unfortunately I couldn’t find any so far

I have searched the existing open and closed issues

Required Information

DietPi version | G_DIETPI_VERSION_CORE=9
G_DIETPI_VERSION_SUB=17
G_DIETPI_VERSION_RC=2
G_GITBRANCH=‘master’
G_GITOWNER=‘MichaIng’
G_LIVE_PATCH_STATUS[0]=‘not applicable’
Distro version | trixie
Kernel version | Linux 6.12.48+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.48-1 (2025-09-20) x86_64 GNU/Linux
Architecture | amd64
SBC model | - VM
Power supply used | - VM
SD card used | - VM

Additional Information (if applicable)

Software title | ThingsBoard
i tried to install Thingsboard which needs Java 17 as a dependency
Can this issue be replicated on a fresh installation of DietPi? → yes

Steps to reproduce

<!-- Explain how to reproduce the issue -->

```
apt install openjdk-17-jdk-headless
```

Expected behaviour

<!-- What SHOULD be happening? -->

openjdk 17 gets installed…

Actual behaviour

<!-- What IS happening? -->

Error Message: Fehler: Paket openjdk-17-jdk-headless kann nicht gefunden werden.

<!-- Please post any extra details that might help solve the issue -->

…

Jappe · 24 October 2025 18:53

The package you are trying to install is not available anymore in debian trixie https://packages.debian.org/search?suite=trixie&arch=any&searchon=names&keywords=openjdk

You would need to install version 21 or 25 or if you explicitly need version 17, build it by yourself.
But I guess it should be compatible with version 21 too.

dietpi-software install 8

Joulinar · 24 October 2025 19:06

not necessarily, the alternative would be adoptium JFrog

Similar we do as well

github.com/MichaIng/DietPi

dietpi/dietpi-software

7b8588c96


      
          			else
          				# APT key: https://adoptium.net/installation/linux
          				G_EXEC mkdir -p /etc/apt/keyrings
          				G_EXEC curl -sSfLo /etc/apt/keyrings/dietpi-adoptium.asc 'https://packages.adoptium.net/artifactory/api/gpg/key/public'
          
          				# APT source
          				G_EXEC eval "cat << '_EOF_' > /etc/apt/sources.list.d/dietpi-adoptium.sources
          Types: deb
          URIs: https://packages.adoptium.net/artifactory/deb
          Suites: ${G_DISTRO_NAME/forky/trixie}
          Components: main
          Signed-By: /etc/apt/keyrings/dietpi-adoptium.asc"
          				G_AGUP
          
          				# Allow Debian's OpenJDK to be autopurged
          				G_EXEC apt-mark auto 'openjdk-*-jre-headless'
          
          				G_AGI "temurin-$JAVA_VERSION-jre"
          				JAVA_PATH="/usr/lib/jvm/temurin-$JAVA_VERSION-jre-$(dpkg --print-architecture)/bin/java"
          			fi

c0mm4nd3rk33n · 24 October 2025 22:14

Thank you very much!

this guide helped me:

at the end i was able to install with:

“apt install temurin-17-jdk”

and now i can install and configure ThingsBoard (and start it / open the WebUI)