How to indicate code snippets in Docbook?

Sorry for this newbie question. I'm trying to learn this stuff as I 
write. I'm a bit stumped on how to specify inline code snippets and 
set-apart (separate "paragraph") code examples.

In HTML, I would use <code>a[i]</code> and

<pre>
   public void foo() {
   }
</pre>

for these roles. What's the nearest Docbook equivalent?

Bob Foster