title: private constructor
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/2062560/what-is-the-use-of-making-constructor-private-in-a-class">What is the use of making constructor private in a class?</a>  </p>
  </blockquote>
  
  
  
  <p>Where do we need private constructor?  How can we instantiate a class having private constructor?  </p>