title: Why use Uri.Builder and not just string and concatente parameters to it?
body: <p>I was just wondering why it is advised to use a <code>Uri.Builder</code> instead of just using just strings and concatenating the parameters to it?.</p>
  
  <p>Can someone please explain it with some short example?</p>
  
  <p>Is it because of efficiency (because Strings are immutable..etc (but then we can use <code>Stringbuilder</code> or <code>StringBuffer</code>) )</p>
  
  <p>Or there are any security issues involved with Strings?</p>