private void addPainter(myjava.gui.syntax.Painter painter) { EntryListPanel newPanel = new EntryListPanel(painter); listPanelSet.add(newPanel); centerPanel.add(newPanel, painter.getName()); painterComboBox.removeItemListener(painterChangeListener); painterComboBox.removeAllItems(); for (EntryListPanel p : listPanelSet) { painterComboBox.addItem(p.getPainter()); } removedPainters.remove(painter); painterComboBox.addItemListener(painterChangeListener); }