Consider the bit of code below. It's a much simplified version of my real app.
In jPanel1 is a single label. In jPanel2 is a single button.
The button in jPanel2 is supposed to wipe clear (with removeAll()) jPanel1 and add a new label in place of the old one. What actually happens is that after the first button press, jPanel1 is indeed cleared by the removeAll() method but the new label can't be added (or rather it can be added but won't show.) I can hard code the removal & addition back and forth all day & it works fine. It's just when I use a swing component like JButton or JComboBox that it doesn't work. Why?? Is this a thread thing? (I know I can just change the text of the label but the real app is much more complicated.)