title: Getting a key from a hashtable without the value in Java
body: <p>I have a hashtable like so</p>
  
  <pre><code>hashtable = new Hashtable();
  </code></pre>
  
  <p>How can I get a key (any key will do) from the hashtable without knowing a value pair for the key? If I could select a key randomly from the hashtable that would be brilliant but really all I need is to just extract a key from the hashtable.</p>