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Editorial Team
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Asked: 2026-05-29T06:16:44+00:00

I’m a bit new to Java / Processing and I opened up a project/workspace

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I’m a bit new to Java / Processing and I opened up a project/workspace with the following errors:

is missing required library: '/Applications/Processing.app/Contents/Resources/Java/libraries/javamail/smtp.jar' 
/javamail/dsn.jar
/javamail/mailapi.jar
/javamail/pop3.jar

I have the Processing app installed, but it’s been a while…do I just need to upgrade processing or is there another place I need to go to get these .jar files?

I’m using Eclipse and there seems to be quite a list of referenced jar files (some broken)

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1 Answer

  1. Editorial Team

    It’s telling you that there used to be a library at 

    /Applications/Processing.app/Contents/Resources/Java/libraries/javamail/smtp.jar

    but it’s no longer there, or possibly you opened a project that somebody else edited on a different machine where things were laid out differently.

    Open the project build-path dialog and make sure all the libraries point to the correct locations.

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