Bootstrap Tab to set active & show its content in onload or onclick

<div>
    <ul class="nav nav-tabs" id="tabMenu">
        <li class="active"><a href="#Home">Home</a></li>
        <li><a href="#Training">Training</a></li>
        <li class="dropdown">
            <a data-toggle="dropdown" class="dropdown-toggle" href="#">
Placements <b class="caret"></b></a>
            <ul class="dropdown-menu">
                <li><a href="#dotnet">DotNet</a></li>
                <li><a href="#android">Android</a></li>
                <li><a href="#java">Java</a></li>
            </ul>
        </li>
    </ul>
    <div class="tab-content">
        <div id="Home" class="tab-pane fade in active">
            <p>This is the Home page...</p>
        </div>
        <div id="Training" class="tab-pane fade">
            <p>Please select your option regarding on Training...</p>
        </div>
        <div id="dotnet" class="tab-pane fade">
            <p>Welcome to DotNet Placements Section...</p>
        </div>
        <div id="android" class="tab-pane fade">
            <p>Welcome to Android Placements Section...</p>
        </div>
        <div id="java" class="tab-pane fade">
            <p>Welcome to Java Placements Section...</p>
        </div>
    </div>
</div>


Showing Tab targeted by Selector:
In order to show our tab manually on start or reload, we have to add the following 
script to the above code
<script type="text/javascript">
$(document).ready(function () {
    $('#tabMenu a[href="#java"]').tab('show'); 
// showing the tab targeted by the selector
});
</script>


Showing First tab by Default:
In order to show the First tab on page reload, Add the below script to the main source
<script type="text/javascript">
$(document).ready(function () {
    $("#tabMenu a:first").tab('show'); // It show the first tab on Reload
});
</script>


Showing Last tab by Default:
If we need to show the last tab on default, Change the Script like below,
<script type="text/javascript">
$(document).ready(function () {
    $("#tabMenu a:last").tab('show'); 
// It show the Last tab on Reload
});
</script>


Showing Tabs based on Index:
We can also show the Default Tab by using Index like in the below script,
<script type="text/javascript">
$(document).ready(function () {
    $("#tabMenu li:eq(1) a").tab('show'); 
// It shows second tab (0-indexed, like an array) on Reload
});
</script>