Add Listener to Unknown Number of JMenuItems

How can I add an ActionListener to each JMenuItem by cycling through an unknown number of menu items?
I have a program that prompts the user for a database, then creates a JMenu of table names based on whatever database the user selects.
This means that I don't know the table names or number of tables that will be added to the JMenu.
I need to add an ActionListener to EACH JMenuItem. The problem is that I am only able to select one table from the menu. Subsequent menu clicks (on different table names) have no affect on the output.
Here is an excerpt of my code:
ResultSet rs = md.getTables(null, null, null, types);
while (rs.next()) {
tables.add(rs.getString("table_name"));
for (Iterator i = tables.iterator(); i.hasNext(); )
String table = (String) i.next();
JMenuItem mi = new JMenuItem(table);
j1.add(mi);
mi.addActionListener(this);
[END CODE]
Thanks for any help you can give!

I got it. It turns out that I WAS setting the listeners correctly. My additonal output was "hidden" in the window. I found it by pure luck when I expanded the window size.
I added a line to remove all components from the JPanel before adding a new one and this "refresh" worked.
Thanks fot the help anyway! It is greatly appreciated.

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