title: What is Low Level Plumbing in Programming field?
body: <p>As per <strong>Oracle Java Documentation</strong>  Collections Framework frees you to concentrate on the important parts of your program rather than on the low-level "plumbing" required to make it work.I want to know :</p>
  
  <ol>
  <li>What is Low-level Plumbing error?</li>
  <li>I want a example of small code that shows, how java collection help us to    overcome of this error or problem. or Real time example. Thanks in advance </li>
  </ol>