title: hash table internal index
body: <p>How can I reach the internal array representation of the Java Hashtable?  I know that hashtables are just cleverly organized arrays and I want to use the index of each key so I can work in parallel with a Disjoint set.  </p>
  
  <p>I need one of two things:</p>
  
  <ol>
  <li>The hash function used to turn my keys into the index in the internal array of the hashtable </li>
  <li>The corresponding index of the key.</li>
  </ol>