title: Using Linq4j with in-memory primitive List and Map
body: <p>I've been trying to search but I can't seem to find some example on how to use <code>Linq4j</code> for in-memory data stored in a <code>java.util.Map</code>.</p>
  
  <p>Can someone site some links or examples on how to use <code>Linq4j</code> for this purpose? </p>