title: How can I generate random strings in java?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/41107/how-to-generate-a-random-alpha-numeric-string-in-java">How to generate a random alpha-numeric string in Java</a>  </p>
  </blockquote>
  
  
  
  <p>I want to write a code that build random string by Specified length . 
  how can do it?</p>