A DESCRIPTION OF THE PROBLEM :

The JDK 1.5 compiled package can be executed on new versions of JDK 1.8 - JDK 15. However, the package compiled using JDK 1.6 (and above) creates a jar file that cannot be used for reading such files.

Discussed on reddit:
https://www.reddit.com/r/java/comments/lid72i/jdk_15_target_option_will_be_gone_is_it_good/

The only way to create a functional jar file is to use -target=1.5 (for running on JDK 16). Any other target fails at runtime.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
https://github.com/chekanov/RootIOreader

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
End of reading file
ACTUAL -
Exception in thread "main" java.lang.ClassFormatError: LineNumberTable attribute has wrong length in class file hep/io/root/proxy/TString
     [java] at java.base/java.lang.ClassLoader.defineClass1(Native Method)

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https://github.com/chekanov/RootIOreader
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CUSTOMER SUBMITTED WORKAROUND :
Not known. It is possible that the option to switch off stack frames can help.

FREQUENCY : always