title: jcombobox populate with hashmap
body: <p>I want to fill my combobox with a display value and a number value</p>
  
  <pre><code>HashMap&lt;Integer, String&gt; databaseList
  </code></pre>
  
  <p>I would to display the string in the combobox but the value of the comboxbox must be integer.
  I know this is posible in c# is this also possible in Java?</p>