Removing Item From JList - getSelectedIndex problem

Hi all,

I am currently working on a JList that populates data into a JList
from a CSV file. I have a button that is supposed to get the Selected
index and then delete that item from the JList. Below is the code that
I am using:

 int index = lstComputerExceptions.getSelectedIndex();
        System.out.println("index is: " + index);
        model.remove(0);

        int size = model.getSize();

        if (size == 0) { //Nobody's left, disable firing.
            btnDelete.setEnabled(false);

        } else { //Select an index.
            if (index == model.getSize()) {
                //removed item in last position
                index--;
            }

            lstComputerExceptions.setSelectedIndex(index);
            lstComputerExceptions.ensureIndexIsVisible(index);
        }

I have printed out what index is and no matter what item I have in the
Jlist I have selected it will always print out
-1. Therefore keeps on causing my program to crash and not delete the
item out of the Jlist.

Any help in this matter would be highly appreicated.

Thank you