How eliminating duplicated values from selecItem's List...

Hi guys,
i've a problem.
I've a list of selectItem elements.
private List<SelectItem> names;
filled with some values.
In this values there are some duplicated values, so i need to eliminate them.
How can i do it?
Please help me,thanks

thanks very much...
but i have a problem.
I need to use ArrayList.
What i want now is creating a Set and copying in it the arraylist....it should work???
I've tried in this manner
Once i've created the arrayList names
i've defined
private Set<SelectItem> names2;and i've done
names2=new HashSet();
names2.addAll(names);calling in my page names2.
The problem is that it shows me the same list, with changed order, but without eliminating duplicated values.
Can you help me?

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Date: Wed, 21 Oct 2009 14:36:33 -0600
From: [email protected]
To: [email protected]
Subject: how to filter results from 4 dynamic list menus depandant on how many of them are selected
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