title: How do I push a play! framework java application to a Dokku in Digital Ocean droplet?
body: <p>When I try to push a get an error:</p>
  
  <blockquote>
    <p>java.lang.UnsupportedClassVersionError: org/webjars/WebJarExtractor$Cache : Unsupported major.minor version 51.0</p>
  </blockquote>
  
  <p>I realize the problem happens because when I execute the "push" action form Git, Dokku installs the OpenJdk 1.6, but I don't know how to solve this problem (I already installed the Oracle Jdk 8 on my digital ocean droplet). I am using the Ubuntu + Dokku image as well.</p>