title: How to fix Java error Unsupported major.minor version 52.0 when using Apache Jena tdbloader
body: <p>On a Apache Jena 3.1.0 on Ubuntu 14.04, while trying to use tdbloader to load triples to a triple store, I've got the following error:</p>
  
  <blockquote>
    <p>tdb/tdbloader : Unsupported major.minor version 52.0</p>
  </blockquote>
  
  <p>Any hints appreciated.</p>