Java EE (Java Enterprise Edition) General Discussion

Basically I'm trying to populate a list in a JSP page. At the minute I have something like this:

<li>List
<ul>
<li><a first</a>
<li><a second</a>
<li><a third</a>
</ul>
</li>

What I want to know is can i do something like this? Basically I want to tailor my list to show certain elements depending on "something".

<li>List
<ul>
if (something == true){
<li><a first</a>
<li><a second</a>
}
<li><a third</a>
</ul>
</li>

Really new to JSP stuff so any help would be great!