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Thursday, February 27, 2020

[Solved] com/okta/tools/WithOkta : Unsupported major.minor version

Error

 Exception in thread "main" java.lang.UnsupportedClassVersionError: com/okta/tools/WithOkta : 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)  

Cause/solution:-

Main reason for this error is older version of the Java JDK being used. Like in mine case it was

 java -version  
 java version "1.7.0_191"  
 OpenJDK Runtime Environment (amzn-2.6.15.4.82.amzn1-x86_64 u191-b01)  
 OpenJDK 64-Bit Server VM (build 24.191-b01, mixed mode)  

But the application requires atleast JDK Version 1.8 .

So to resolve the issue consider upgrading the JDK to version 1.8 instead.

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