private ConverterRegistry() { registeredClasses = new HashMap<Class, ValueConverter>(); registeredClasses.put( BigDecimal.class, new BigDecimalValueConverter() ); registeredClasses.put( BigInteger.class, new BigIntegerValueConverter() ); registeredClasses.put( Boolean.class, new BooleanValueConverter() ); registeredClasses.put( Boolean.TYPE, new BooleanValueConverter() );