title: Purpose of Objects.isNull(...) / Objects.nonNull(...)
body: <p>What is the purpose of </p>
  
  <pre><code>Objects.isNull(x) 
  </code></pre>
  
  <p>if we can simply write </p>
  
  <pre><code>x == null
  </code></pre>
  
  <p>?</p>
  
  <p>Same for </p>
  
  <pre><code>Objects.nonNull(...)
  </code></pre>
  
  <p>and</p>
  
  <pre><code>x != null
  </code></pre>