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Editorial Team
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Asked: 2026-05-29T09:33:41+00:00

How do I know which version of a pom dependency I should use if

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How do I know which version of a pom dependency I should use if its version is not in the jar name. For example the jar commons-lang.jar, what version of the pom dependency should I use ?

Here are its search results on maven central repo – http://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22net.sf.staccatocommons%22%20AND%20a%3A%22commons-lang%22

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1 Answer

  1. Editorial Team

    If you are migrating to Maven and just have a bunch of jars then you can try examining their META-INF/MANIFEST.MF files inside of those jars.

    I’ve just opened commons-lang.jar and saw the following in its META-INF/MANIFEST.MF:

    ...
Implementation-Title: Commons Lang
Implementation-Vendor: The Apache Software Foundation
Implementation-Vendor-Id: org.apache
Implementation-Version: 2.4
...

    So you can use Implementation-Version as your version in pom.xml:

    <dependency>
  <groupId>commons-lang</groupId>
  <artifactId>commons-lang</artifactId>
  <version>2.4</version>
</dependency>
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