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kamilfb / mqtt-spy

Please use the new Eclipse Paho GitHub repo instead.
https://github.com/eclipse/paho.mqtt-spy/wiki
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Unsupported class version error #128

Closed ealvarez-accedo closed 5 years ago

ealvarez-accedo commented 5 years ago

Hello,

I'm trying to run the latest version of worldographer using openjdk8.0 and openjfx 8u60, using the following command line invocation:

java -Xmx4G -jar worldographer.jar

I then get the following error message:

Exception in thread "main" java.lang.UnsupportedClassVersionError: com/inkwellideas/ographer/ui/Worldographer : Unsupported major.minor version 52.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:808)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:442)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:64)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:354)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:348)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:347)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:430)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:323)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:363)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
ealvarez-accedo commented 5 years ago

Please disregard. The problem lied with conflicting version of openjdk coexisting in the machine.