title: Counting keys in LinkedHashMap<String, ArrayList<String>>
body: <p>Let's say I have something like this:</p>
  
  <pre><code>LinkedHashMap &lt;String, ArrayList&lt;String&gt;&gt; h 
  keyOne has
  stringOne 
  stringTwo 
  stringThree
  
  keyTwo has
  stringOne
  </code></pre>
  
  <p>How do I count the size of ArrayList of the associated key? So for keyOne, it should give me 3.</p>