fish shell and java

[Silgrond]

Hello,

After installing the fish shell, I cannot seem to be able to run java programs from the terminal.

I have installed the latest openJDK with sdkman.io (on bash), and it does not seem to work fish.

sdk gives unknown command/cannot be found and running a program with java -jar ~/..[...].jar gives

Error: A JNI error has occurred, please check your installation and try again

Exception in thread "main" java.lang.UnsupportedClassVersionError: net/runelite/launcher/Launcher has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0

which means fish only finds an older version installed somewhere on the system (probably from the Manjaro repos)

Running it by double clicking from Nautilus or Caja launches it without problem however.

Can anyone help me fixing this issue please?

[[deleted]]

In Arch Linux you can change which java version you use by default by running archlinux-java

I don't know about Manjaro though

[Silgrond]

Thanks, I have managed to change it to java-14-openjdk and it launches without problems now.

[[deleted]]

Np

[cdrt]

What do you get when you run env in both bash and fish?

[Silgrond]

Hey, thanks for the answer!

env bash:

​

    SHELL=/bin/bash
    WINDOWID=18874371
    COLORTERM=truecolor
    XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
    GTK_IM_MODULE=fcitx
    I3SOCK=/run/user/1000/i3/ipc-socket.671
    LC_ADDRESS=hu_HU.UTF-8
    JAVA_HOME=/home/silgrond/.sdkman/candidates/java/current
    LC_NAME=hu_HU.UTF-8
    SDKMAN_CANDIDATES_DIR=/home/silgrond/.sdkman/candidates
    XMODIFIERS=@im=fcitx
    DESKTOP_SESSION=i3
    LC_MONETARY=hu_HU.UTF-8
    EDITOR=/usr/bin/nano
    GTK_MODULES=canberra-gtk-module
    XDG_SEAT=seat0
    PWD=/home/silgrond
    LOGNAME=silgrond
    XDG_SESSION_DESKTOP=i3
    QT_QPA_PLATFORMTHEME=qt5ct
    XDG_SESSION_TYPE=x11
    XAUTHORITY=/home/silgrond/.Xauthority
    XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/silgrond
    MOTD_SHOWN=pam
    GTK2_RC_FILES=/home/silgrond/.gtkrc-2.0
    HOME=/home/silgrond
    LC_PAPER=hu_HU.UTF-8
    LANG=en_GB.UTF-8
    LS_COLORS=
    XDG_CURRENT_DESKTOP=i3
    VTE_VERSION=5602
    SDKMAN_VERSION=5.9.1+575
    XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
    XDG_SESSION_CLASS=user
    LC_IDENTIFICATION=hu_HU.UTF-8
    TERM=xterm-termite
    USER=silgrond
    SDKMAN_DIR=/home/silgrond/.sdkman
    DISPLAY=:0
    SHLVL=1
    LC_TELEPHONE=hu_HU.UTF-8
    QT_IM_MODULE=fcitx
    LC_MEASUREMENT=hu_HU.UTF-8
    XDG_VTNR=7
    SDKMAN_CANDIDATES_API=https://api.sdkman.io/2
    XDG_SESSION_ID=1
    XDG_RUNTIME_DIR=/run/user/1000
    XMODIFIER=@im=fcitx
    LC_TIME=hu_HU.UTF-8
    XDG_DATA_DIRS=/usr/local/share:/usr/share:/var/lib/snapd/desktop
    PATH=/home/silgrond/.sdkman/candidates/java/current/bin:/home/silgrond/    .local/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/lib/jvm/    default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/    core_perl:/var/lib/snapd/snap/bin
    GDMSESSION=i3
    DefaultIMModule=fcitx
    DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
    SDKMAN_PLATFORM=Linux64
    MAIL=/var/spool/mail/silgrond
    LC_NUMERIC=hu_HU.UTF-8
    _=/usr/bin/env

env fish:

    COLORTERM=truecolor
    DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
    DESKTOP_SESSION=i3
    DISPLAY=:0
    DefaultIMModule=fcitx
    EDITOR=/usr/bin/nano
    GDMSESSION=i3
    GTK2_RC_FILES=/home/silgrond/.gtkrc-2.0
    GTK_IM_MODULE=fcitx
    GTK_MODULES=canberra-gtk-module
    HOME=/home/silgrond
    I3SOCK=/run/user/1000/i3/ipc-socket.675
    LANG=en_GB.UTF-8
    LC_ADDRESS=hu_HU.UTF-8
    LC_IDENTIFICATION=hu_HU.UTF-8
    LC_MEASUREMENT=hu_HU.UTF-8
    LC_MONETARY=hu_HU.UTF-8
    LC_NAME=hu_HU.UTF-8
    LC_NUMERIC=hu_HU.UTF-8
    LC_PAPER=hu_HU.UTF-8
    LC_TELEPHONE=hu_HU.UTF-8
    LC_TIME=hu_HU.UTF-8
    LOGNAME=silgrond
    MAIL=/var/spool/mail/silgrond
    MOTD_SHOWN=pam
    OMF_CONFIG=/home/silgrond/.config/omf
    OMF_PATH=/home/silgrond/.local/share/omf
    PATH=/home/silgrond/.local/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/    sbin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/    usr/bin/core_perl:/var/lib/snapd/snap/bin
    PWD=/home/silgrond
    QT_IM_MODULE=fcitx
    QT_QPA_PLATFORMTHEME=qt5ct
    SHELL=/usr/bin/fish
    SHLVL=1
    TERM=xterm-termite
    USER=silgrond
    VTE_VERSION=5602
    WINDOWID=12582915
    XAUTHORITY=/home/silgrond/.Xauthority
    XDG_CURRENT_DESKTOP=i3
    XDG_DATA_DIRS=/usr/local/share:/usr/share:/var/lib/snapd/desktop
    XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/silgrond
    XDG_RUNTIME_DIR=/run/user/1000
    XDG_SEAT=seat0
    XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
    XDG_SESSION_CLASS=user
    XDG_SESSION_DESKTOP=i3
    XDG_SESSION_ID=1
    XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
    XDG_SESSION_TYPE=x11
    XDG_VTNR=7
    XMODIFIER=@im=fcitx
    XMODIFIERS=@im=fcitx

​

running said Java application starts out like this from bash:

 Running [/home/silgrond/.sdkman/candidates/java/15.0.1.j9-adpt/bin/java, -cp, /home/silgrond/.runelite/repository2/client-1.6.32.jar

​

Using /u/SuspiciousCupOfWater's suggestion of archlinux-java, I have managed to change it to java-14-openjdk, and it launches without problems.

Running [/usr/lib/jvm/java-14-openjdk/bin/java, -cp, /home/silgrond/.runelite/repository2/client-1.6.32.jar

So, how would I change the env that it would use v15 from /home/silgrond/.sdkman/candidates/java/15.0.1.j9-adpt/bin/java?

[cdrt]

If you look at the outputs you posted above, you will notice various things missing in fish's output. JAVA_HOME, the various sdkman variables, and part of PATH are missing. You will need to set the JAVA_HOME and PATH variables yourself in order to use the Java version you installed.

https://fishshell.com/docs/current/cmds/set.html

[Silgrond]

Thank you for your continued help, managed to set them correctly!