title: three item HashMap without internal iteration
body: <p>What is the best way to implement a three item hashMap?
  For example, I would like to use a regular String key , but have it map to two different objects. The idea is like having a list of lists, except that the first item is a key.</p>
  
  <p>I am trying to avoid iterating through the list ( so the behavior is like a hashmap ). Would you agree the only way is to build a new Class? It seems a "HashMap3" object ( with methods of get1( key ) &amp; get2( key ) ) would be useful. I am unsure of how to set this up myself.</p>
  
  <p>How can I create the collection?</p>