title: Java boxing or unboxing
body: <p>I found an example where I cannot find the number of boxing and unboxing in the Java code below :</p>
  
  <pre><code>Integer x = 5;
  int y = x + x;
  </code></pre>
  
  <p>I would say that there is one type of unboxing (<code>int y = x + x</code>), but I am not sure about that. Is there any boxing as well?</p>