JXComboBox extends JComboBox { @Override public ListCellRenderer getRenderer() { return getDelegatingRenderer(); } JXComboBox();  JXComboBox(ComboBoxModel model);  JXComboBox(Object[] items);  JXComboBox(Vector<?> items); String getStringAt(int row); @Override ListCellRenderer getRenderer(); ListCellRenderer getWrappedRenderer(); @Override void setRenderer(ListCellRenderer renderer); boolean isUseHighlightersForCurrentValue(); void setUseHighlightersForCurrentValue(boolean useHighlightersForCurrentValue); void setHighlighters(Highlighter... highlighters); Highlighter[] getHighlighters(); void addHighlighter(Highlighter highlighter); void removeHighlighter(Highlighter highlighter); @Override void updateUI();  }
@Test public void testDefaultListRenderer() { JXComboBox combo = new JXComboBox(); ListCellRenderer renderer = ((DelegatingRenderer) combo.getRenderer()).getDelegateRenderer(); assertThat(renderer, is(instanceOf(DefaultListRenderer.class))); }