Running examples in ‘RKEEL-Ex.R’ failed
The error most likely occurred in:

> ### Name: Alatasetal_A
> ### Title: Alatasetal_A KEEL Association Rules Algorithm
> ### Aliases: Alatasetal_A R6_Alatasetal_A
> ### Keywords: association rules
> 
> ### ** Examples
> 
> 
> #Load KEEL dataset iris
> dat<-loadKeelDataset("iris")
/Builds/CRAN-QA-Simon/packages/mavericks-x86_64/Rlib/3.3/RKEELdata/datasets/> 
> #Create algorithm
> algorithm <- Alatasetal_A(dat)
> 
> #Run algorithm
> algorithm$run()
Executing algorithm...
java -jar RunKeel.jarException in thread "main" java.lang.UnsupportedClassVersionError: keel/RunKeelTxt/runkeeltxt : Unsupported major.minor version 51.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
/tmp/RtmpAYaTjV/experiment_2017-02-05_07-21-002656/results/KEELToPMML/TSTAlatasetal_A/result0s0file0.pmml
Error! Error in private$readOutputs(paste0(private$mainPath, "/results/KEELToPMML/TST", : Results were not stored. Execution error.
> 
> #Rules in format arules
> algorithm$rules
NULL
> 
> #Show a number of rules
> algorithm$showRules(2)
Error! Error in (function (classes, fdef, mtable) : unable to find an inherited method for function ‘inspect’ for signature ‘"NULL"’
> 
> #Return a data.frame with all interest measures of set rules
> algorithm$getInterestMeasures()
Error in (function (classes, fdef, mtable)  : 
  unable to find an inherited method for function ‘quality’ for signature ‘"NULL"’
Calls: <Anonymous> -> <Anonymous> -> <Anonymous>
Execution halted