title: How to find version of Jar if not mentioned in Manifest
body: <p>I have a project in which many JARS are checked in but there is no version information for them. </p>
  
  <p>I have to implement dependency management using Apache Ivy, but I don't know which versions to point to in my <code>ivy.xml</code>. I checked the Manifests and many of them do not have the JAR versions mentioned there.</p>
  
  <p>Is there another way to find version of JARS? I understand that finding checksum and comparing them is another option but for that I need to check each of my JAR against checksums of all possible JAR versions and so that is not an option.</p>
  
  <p>Any other suggestions please?</p>