If you google for “Unsupported major.minor version 52.0” you’ll find the answer 
to that – you have class files compiled with one Java version (probably some 
pre-compiled .jars you got from somewhere), but you are running under a 
different Java version ( the class files are probably Java 8, and you are 
trying to run using Java 6 or 7).
As far as the deprecated issue is concerned, I can’t comment, sorry.
From: jenkinsci-users@googlegroups.com 
[mailto:jenkinsci-users@googlegroups.com] On Behalf Of Neil Watson
Sent: 12 October 2016 16:35
To: Jenkins Users
Subject: SonarCube pluging not working.


I'm having trouble getting the SonarCube plugin to work, and I'm rather new to 
Jenkins.  The error from the build job is:

11:26:32 [workspace] $ 
 -X -e 
 ******** -Dsonar.host.url= ******** ******** 

11:26:32 WARN: sonar-runner script is deprecated. Please use sonar-scanner 

11:26:32 Exception in thread "main" java.lang.UnsupportedClassVersionError: 
org/sonarsource/scanner/cli/Main : Unsupported major.minor version 52.0

11:26:32       at java.lang.ClassLoader.defineClass1(Native Method)

11:26:32       at java.lang.ClassLoader.defineClass(ClassLoader.java:800)

11:26:32       at 

11:26:32       at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)

11:26:32       at java.net.URLClassLoader.access$100(URLClassLoader.java:71)

11:26:32       at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

11:26:32       at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

11:26:32       at java.security.AccessController.doPrivileged(Native Method)

11:26:32       at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

11:26:32       at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

11:26:32       at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

11:26:32       at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

11:26:32       at 

11:26:32 Build step 'Execute SonarQube Scanner' marked build as failure

11:26:32 Started calculate disk usage of build

Why is the plugin running the deprecated sonar-runner and what does the 
exception mean?

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