How can you tell what version of JDK a class was compiled under
Kind Folks,
I have a Java application purchased from a vendor that is certified to run under JDK/JRE 1.2xxx. I recently received some extensions to the application from the vendor's consulting arm but I am having problems with the extensions. I believe the extensions were compiled under JDK 1.3xxxx but I need tp prove it to the vendor. Is there a way I can verify what version of JDK a class file was compiled under?
John Fowler
...version of JDK a class file was compiled under? Not sure that makes sense. The class files will run the same under both. The only difference you would see is if you got a class not found or a method not found exception. If the class/method does not exist in 1.2 but does exist in 1.3 then that is where they were compiled. Manually verifying that would take a lot of work. Running it, as long as you excercise all of the functionality, (and presuming your app is not eating exceptions/errors when it shouldn't) then you should get an exception telling you of the error.
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