title: Parameter passing to static method
body: <p><img src="https://i.stack.imgur.com/eKcqv.jpg" alt="enter image description here"></p>
  
  <p>I this code, the out put is <code>6</code>, But i think that it should be <code>4</code> </p>
  
  <p>Why output is <code>6</code>?</p>