title: The import javax.persistence cannot be resolved
body: <p>I'm currently working on a project that requires EntityManager EntityManagerFacotry and Persistence each from the javax.persistence package.  It seems to be for the database service, but the current code is not very well documented.  By searching google it seems that there should be an xml file that comes along with this, but there isn't one of those either.  I guess my question is simply how do I make these unresolved imports go away?  Do I have to add another jar to the build path?  It seems that I shouldn't have to since it's been around since 1.5.</p>
  
  <p>Any help is greatly appreciated.</p>