Unsupported major.minor version 52.0

Unimus support forum
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SPITwSPOTS
Posts: 10
Joined: Wed Sep 14, 2016 8:41 pm

Wed Sep 14, 2016 8:48 pm

Please excuse my ignorance if this is a simple thing. When I try to run java -jar Unimus.jar I get the following error: (Any suggestions would be appreciated)

Exception in thread "main" java.lang.UnsupportedClassVersionError: net/unimus/Application : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:89)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:46)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:58)
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Tomas
Posts: 1206
Joined: Sat Jun 25, 2016 12:33 pm

Wed Sep 14, 2016 9:41 pm

What is your JRE version?

This error indicates your JRE is too old to run Unimus.
(Unimus requires JRE 1.8.0_50 or newer)
SPITwSPOTS
Posts: 10
Joined: Wed Sep 14, 2016 8:41 pm

Wed Sep 14, 2016 10:41 pm

Thanks. That fixed it.

We are running in Debian. I don't do a lot of server stuff. Usually I'm installing packages that install their own start up scripts and everything. Do you have and suggestions on the best way to make this installation persistent/ (ie start up automatically and keep settings)
User avatar
Tomas
Posts: 1206
Joined: Sat Jun 25, 2016 12:33 pm

Wed Sep 14, 2016 11:50 pm

.deb packages are planned before release, just not available yet.
(also an apt repo with those .deb packages is planned)

UPDATE:
We have an installer which will help install in Ubuntu/Debian:
https://wiki.unimus.net/pages/viewpage. ... eId=950330
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