registeredClasses.put( Character.TYPE, new CharacterValueConverter() ); registeredClasses.put( Color.class, new ColorValueConverter() ); registeredClasses.put( Double.class, new DoubleValueConverter() ); registeredClasses.put( Double.TYPE, new DoubleValueConverter() ); registeredClasses.put( Float.class, new FloatValueConverter() ); registeredClasses.put( Float.TYPE, new FloatValueConverter() );