Compiling Java Servlet with Depricated Methods

I have a problem of compiling Java servlets that contain depricated methods. If you compile against modern version of servlet.jar I see depricated methods error messages and if I use a very old servlet.jar it cannot find newer methods. What is is the best solution in this case?
Thank you,
Boris.

The best thing to do would be compile your code with the -depreciated option to find which methods have been depreciated and the refactor your code to remove them.
The next best thing is to ignore the messages (they are warnings not errors) and your code should still work

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^
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Stop posting here. The crosspost remark was to alert others that there is a duplicate topic - all answers should be centralized in one so as to not waste people's time duplicating answers when they don't see both topics and the answers therein.

Compiling Java Servlet with Depricated Methods

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