By default, the SteamDeck has a read-only immutable OS file system, which means that you can't simply
install anything using the pacman
package manager that comes with the OS (arch linux), since it would modify
the OS file system.
So in order to install anything outside the Software Center (which installs programs in a way that doesn't affect the OS by using flatpak), you have to modify things in you home directory, which shouldn't mess up with the OS and break the system.
Taking this into account, the script located in the scripts
directory of this repository will:
- Download the official oracle JDK 17 compressed file into your home directory, more specifically into
~/.local/jdk
- Exec a checksum of the file using the official sha256 checksum
- Extract the file into
~/.local/jdk/jdk-17.0.4.1
- Add some environment variables to your
~/.profile
and then source it, if it wasn't already sourced, in your bashrc, so your programs / scripts know wherejava
is installed. The variables are:- JAVA_HOME: which points to the
~/.local/jdk/jdk-17.0.4.1
- PATH: which adds the
bin
directory located in the JAVA_HOME, so every executable is available for you to run
- JAVA_HOME: which points to the
By adding the variables to .profile
instead of .bashrc
we ensure to be more "shell agnostic", so if you run
a script in another shell like sh
or launch a graphical program, it should read the environment variables defined there.
.profile
is "manually" sourced in .bashrc
since bash
will try to source first .bash_profile
and .bash_login
if they exist.
To learn about this:
With this, you will have a local installation of java and even better, you can install multiple versions and then point to the one you need.
This script only works (currently) for the jdk-17, since in order to download jdk-11 from oracle's page requires a login.
You can choose which version to install by setting the variable JDK_VERSION
before executing the script, you can
even do it on the same command! If you don't select any version, jdk-17
will be installed by default.
To install jdk-17:
git clone https://github.com/BlackCorsair/install-jdk-on-steam-deck.git && \
JDK_VERSION=17 ./install-jdk-on-steam-deck/scripts/install-jdk.sh
To install jdk-21:
git clone https://github.com/BlackCorsair/install-jdk-on-steam-deck.git && \
JDK_VERSION=21 ./install-jdk-on-steam-deck/scripts/install-jdk.sh
# remove the installation directory this script creates
rm -rf /home/deck/.local/jdk
# remove the ~/.profile file this script creates OR remove the lines using an editor:
# export JAVA_HOME=/home/deck/.local/jdk
# export PATH=$PATH:/home/deck/.local/jdk/jdk-17.0.8/bin
rm -f ~/.profile
# Optionally, you can remove the line added to your bashrc
#
# [[ -f ~/.profile ]] && source ~/.profile
#
# This line shouldn't interfere with anything since it doesn't load the ~/.profile unless it exists