title: Checking for null - what order?
body: <p>When checking for nulls I use this: </p>
  
  <pre><code>String str;
  
  if(str == null){
      //...
  }
  </code></pre>
  
  <p>but I've seen this as well: </p>
  
  <pre><code>if(null == str){
      //...
  }
  </code></pre>
  
  <p>Is there any advantage of using one over the other? Or is it just to improve readability?</p>