{"action":"created","issue":{"url":"https://api.github.com/repos/amten/NeuralNetwork/issues/5","labels_url":"https://api.github.com/repos/amten/NeuralNetwork/issues/5/labels{/name}","comments_url":"https://api.github.com/repos/amten/NeuralNetwork/issues/5/comments","events_url":"https://api.github.com/repos/amten/NeuralNetwork/issues/5/events","html_url":"https://github.com/amten/NeuralNetwork/issues/5","id":69050143,"number":5,"title":"[error launching weka]  java.lang.UnsupportedClassVersionError: weka/gui/GUIChooser : Unsupported major.minor version 52.0","user":{"login":"Floryndas","id":11987472,"avatar_url":"https://avatars.githubusercontent.com/u/11987472?v=3","gravatar_id":"","url":"https://api.github.com/users/Floryndas","html_url":"https://github.com/Floryndas","followers_url":"https://api.github.com/users/Floryndas/followers","following_url":"https://api.github.com/users/Floryndas/following{/other_user}","gists_url":"https://api.github.com/users/Floryndas/gists{/gist_id}","starred_url":"https://api.github.com/users/Floryndas/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Floryndas/subscriptions","organizations_url":"https://api.github.com/users/Floryndas/orgs","repos_url":"https://api.github.com/users/Floryndas/repos","events_url":"https://api.github.com/users/Floryndas/events{/privacy}","received_events_url":"https://api.github.com/users/Floryndas/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2015-04-17T02:40:19Z","updated_at":"2015-12-28T22:32:57Z","closed_at":null,"body":"Hello,\r\nI'm using weka 3.6.10-2. After installation, that's the error I have when I tried to launch weka:\r\n$weka\r\n[warning] /usr/bin/weka: Unable to locate libsvm.jar in /usr/share/java\r\nException in thread \"main\" java.lang.UnsupportedClassVersionError: weka/gui/GUIChooser : Unsupported major.minor version 52.0\r\nat java.lang.ClassLoader.defineClass1(Native Method)\r\nat java.lang.ClassLoader.defineClass(ClassLoader.java:800)\r\nat java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)\r\nat java.net.URLClassLoader.defineClass(URLClassLoader.java:449)\r\nat java.net.URLClassLoader.access$100(URLClassLoader.java:71)\r\nat java.net.URLClassLoader$1.run(URLClassLoader.java:361)\r\nat java.net.URLClassLoader$1.run(URLClassLoader.java:355)\r\nat java.security.AccessController.doPrivileged(Native Method)\r\nat java.net.URLClassLoader.findClass(URLClassLoader.java:354)\r\nat java.lang.ClassLoader.loadClass(ClassLoader.java:425)\r\nat sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)\r\nat java.lang.ClassLoader.loadClass(ClassLoader.java:358)\r\nat sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)\r\n\r\nWhen i looked this issue https://github.com/amten/NeuralNetwork/issues/2 , i tried to see my own java version and I have java 1.8 in my computer, so I don't what'is the matter. Can you help me to fix it please?"},"comment":{"url":"https://api.github.com/repos/amten/NeuralNetwork/issues/comments/167670138","html_url":"https://github.com/amten/NeuralNetwork/issues/5#issuecomment-167670138","issue_url":"https://api.github.com/repos/amten/NeuralNetwork/issues/5","id":167670138,"user":{"login":"mik3hall","id":4488118,"avatar_url":"https://avatars.githubusercontent.com/u/4488118?v=3","gravatar_id":"","url":"https://api.github.com/users/mik3hall","html_url":"https://github.com/mik3hall","followers_url":"https://api.github.com/users/mik3hall/followers","following_url":"https://api.github.com/users/mik3hall/following{/other_user}","gists_url":"https://api.github.com/users/mik3hall/gists{/gist_id}","starred_url":"https://api.github.com/users/mik3hall/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mik3hall/subscriptions","organizations_url":"https://api.github.com/users/mik3hall/orgs","repos_url":"https://api.github.com/users/mik3hall/repos","events_url":"https://api.github.com/users/mik3hall/events{/privacy}","received_events_url":"https://api.github.com/users/mik3hall/received_events","type":"User","site_admin":false},"created_at":"2015-12-28T22:32:57Z","updated_at":"2015-12-28T22:32:57Z","body":"> On Dec 28, 2015, at 8:23 AM, Rik Belew <notifications@github.com> wrote:\n> \n> installation of a new package, RankerByDTClassification, is throwing this same error on startup:\n> Exception in thread \"main\" java.lang.UnsupportedClassVersionError: weka/classifiers/trees/ArffAttributeName : Unsupported major.minor version 52.0\n> removing the package from $WEKA_HOME/packages allows weka to startup normally.\n> \nThis wouldn’t have anything to do with this package (NeuralNetwork). I don’t know if it includes what you need to recompile like NerualNetwork does. If it does my suggested solution would be the same. Recompile it to use the same jdk as Weka uses. If source is not available the command line launch suggestion to use it with a later jdk version would probably be the only way to go.\n\nMichael Hall\n\n\n\n\n"}}