The following code shows how to create full navbar with dropdown.
<!-- w ww . java2 s . com-->
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet"
href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<link rel="stylesheet"
href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css">
<script
src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script
src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
</head>
<body style='margin:30px'>
<div class="container">
<div class="navbar navbar-default">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#mynavbar-content">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">java2s.com</a>
</div>
<div class="collapse navbar-collapse" id="mynavbar-content">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Home</a></li>
<!-- Drop Down Code -->
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">About <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#">Board of Members</a></li>
<li><a href="#">Developers Team</a></li>
<li><a href="#">Designing Team</a></li>
<li class="divider"></li>
<li><a href="#">Investors</a></li>
<li><a href="#">Share holders</a></li>
</ul>
</li>
<li><a href="#">Pricing</a></li>
<li><a href="#">Contact</a></li>
<li><a href="#">Feedback</a></li>
</ul>
</div>
</div>
</div>
</div>
</body>
</html>