title: Java 8 convert String of ints to List<Integer>
body: <p>I have a String:</p>
  
  <pre><code>String ints = "1, 2, 3";
  </code></pre>
  
  <p>I would like to convert it to a list of ints:</p>
  
  <pre><code>List&lt;Integer&gt; intList
  </code></pre>
  
  <p>I am able to convert it to a list of strings this way:</p>
  
  <pre><code>List&lt;String&gt; list = Stream.of("1, 2, 3").collect(Collectors.toList());
  </code></pre>
  
  <p>But not to list of ints.</p>
  
  <p>Any ideas?</p>