Can't open smartgit, Java error

January 11, 2022

I’ve installed smartgit via ppa and tried to open it via GUI and it didn’t. I tried to run smartgit command in terminal and it gave me this:

Ignoring following line in file /usr/share/smartgit/bin/smartgit.vmoptions
jre=/usr/lib/jvm/java-1.8.0-openjdk-amd64/
Ignoring following line in file /home/yarkin/.smartgit/smartgit.vmoptions
jre=/usr/lib/jvm/java-1.8.0-openjdk-amd64/
If you experience strange GUI bugs or crashes, try setting GTK_THEME=Adwaita.
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/syntevo/QBootLoader 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
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:473)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:601)

I don’t know what else i should provide, please let me know so that i can update question.

>Solution :

Don’t use the PPA. Simply grab the software from the developer’s website.

https://www.syntevo.com/smartgit/

I always use the "Download for Linux" version. Just unpack it, and you can run the .sh file directly. There is also a convenient add-menuitem.sh script in the /bin folder, that creates shortcuts for Smartgit, so you can start it from your desktop environment’s launcher.

Just move the unpacked folder first to somewhere where you won’t lose it. Like ~/Documents probably is a safe place.