4. Which application languages are available?

By default, the compute instance includes Java, NodeJS, and Python 3.

Java

The Java versions installed are OpenJDK 17 and 21.

The alternatives system can be used to switch versions:

$ java --version
openjdk 17.0.16 2025-07-15 LTS
OpenJDK Runtime Environment (Red_Hat-17.0.16.0.8-2.0.1) (build 17.0.16+8-LTS)
OpenJDK 64-Bit Server VM (Red_Hat-17.0.16.0.8-2.0.1) (build 17.0.16+8-LTS, mixed mode, sharing)

$ sudo update-alternatives --config java

There are 2 programs which provide 'java'.

  Selection    Command
-----------------------------------------------
*+ 1           java-17-openjdk.aarch64 (/usr/lib/jvm/java-17-openjdk-17.0.16.0.8-2.0.1.el9.aarch64/bin/java)
   2           java-21-openjdk.aarch64 (/usr/lib/jvm/java-21-openjdk-21.0.8.0.9-1.0.1.el9.aarch64/bin/java)

Enter to keep the current selection[+], or type selection number: 2

$ java --version
openjdk 21.0.8 2025-07-15 LTS
OpenJDK Runtime Environment (Red_Hat-21.0.8.0.9-1.0.1) (build 21.0.8+9-LTS)
OpenJDK 64-Bit Server VM (Red_Hat-21.0.8.0.9-1.0.1) (build 21.0.8+9-LTS, mixed mode, sharing)

NodeJS

The installed version of NodeJS is 16:

$ node --version
v16.20.2

Python 3

The default installed version of Python is 3.9:

$ python --version
Python 3.9.21

But you can also install manually a newer version (3.12):

$ sudo dnf install -y python312
...
$ python3.12 --version
Python 3.12.9

You can see this in the video:

04_Programming_Language_V1.mp4