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Exception in thread "main" java.lang.UnsupportedClassVersionError

Eslam_ElbyalyNov 15 2022

Hi. I've JDK 12.0.1 x64. Windows 7 64bit, and Java 8 Update 261 (64-bit).
It's been months since I ran ORDS 20.2.1.227.0350 which was already installed. And when I tried to run it today, I faced this error...
Exception in thread "main" java.lang.UnsupportedClassVersionError: oracle/dbtools/jarcl/Entrypoint (Unsupported major.minor version 52.0)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
This post has been answered by Eslam_Elbyaly on Nov 16 2022
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Added on Nov 15 2022
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