Removing element from JList is not working?

This is basically what Hovercraft Full Of Eels already answered, but with some more code pointers.

You appear to be removing the item from the list and then adding it right back again when you call updateList() and this method calls setListData(...) on the JList. I think that you should get rid of that method. The ListModel should hold the data, and there's no need to call revalidate() or repaint() on the JList after changing its data.

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