Including JAR files in Eclipse (App Engine) project

Question

I have been searching for a solution for this issue for multiple hours today and many hours yesterday so I decided to address it here, although it seems a stupid issue.

Answer 1

Might be "a little" too late for this, but in eclipse you don't have to manually copy. Right-Click on project -> Build Path -> Configure Build Path... -> select Deployment Assembly (left). Add your jars here and they will be included when deploying.