title: "The operator == is undefined for the argument type(s) boolean, null"
body: <p>Why eclipse say : </p>
  
  <blockquote>
    <p>"The operator == is undefined for the argument type(s) boolean, null"</p>
  </blockquote>
  
  <p>At the if statement ? Why is inauthorized to write it ?</p>
  
  <pre><code>Object max;
  double a1;
  double a2;
  
  if ((max != null &amp;&amp; a1 &gt; a2) ¦¦ max == null)
       // Something
  </code></pre>