title: Create and populate TreeMap in one line
body: <p>Like an array <code>new Integer[]{ 1, 2, 3 }</code>, can I create and populate a TreeMap using just one line?</p>
  
  <pre><code>// I want to use it in situations like this:
  this.lookFor( new TreeMap( {...} ) );
  </code></pre>
  
  <p>Any chances for <code>HashMap</code> or <code>LinkedHashMap</code> too?</p>