return ( (Date) source ).toString( );
return toString( (Date) source );
	public static String toString( Object source ) throws BirtException	{		if ( source == null )			return null;		else if ( source instanceof Integer )		{			return ( (Integer) source ).toString( );		}		else if ( source instanceof BigDecimal )		{			return ( (BigDecimal) source ).toString( );		}		else if ( source instanceof Boolean )		{			return ( (Boolean) source ).toString( );		}		else if ( source instanceof Date )		{			return ( (Date) source ).toString( );		}		else if ( source instanceof Double )		{			return ( (Double) source ).toString( );		}		else if ( source instanceof String )		{			return (String) source;		}		else			throw new BirtException( ResourceConstants.CONVERT_FAILS, "String",					resourceBundle );	}