title: Hash map with multiple keys?
body: <p>Can I have a hash map in Java that looks like this?</p>
  
  <pre><code>HashMap&lt;String, String, Integer&gt; hmap = new HashMap&lt;String, String, Integer&gt;()
  </code></pre>
  
  <p>My question is similar to this one here<a href="https://stackoverflow.com/questions/822322/how-to-implement-a-map-with-multiple-keys">Question</a></p>
  
  <p>I'm a newbie to Java. So what I want to know is, what would be the best data structure to use if I need something like above, if that is not valid? </p>