I personally think that a Java application should not try to discover the JVM/library version through an akward usage of exceptions/errors.
I'm not so sure this is about actual version information but more about not yet implemented methods in a VM/library that purports to support the version of the API that includes that method. Classpath is in the unfortunate state of supporting different versions of API's depending on which class you are looking at, so what version information would the system property return?
The one of Classpath, as that's the only one it knows for sure.
cheers, dalibor topic
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