@Override
		public Class<?> getColumnClass( int columnIndex ) {
			switch( columnIndex ) {
				case 0: return String.class;
				case 1: return Item.class;
			}
			return super.getColumnClass( columnIndex );
		}
Creates a UI defaults inspector panel that can be embedded into any window.
flatlaf-extras/src/main/java/com/formdev/flatlaf/extras/FlatUIDefaultsInspector.java