setProperty(name, value);
if ((currentValue == null || currentValue.length() == 0) || (value != null && value.length() != 0)) { super.setProperty(name, value); }
	public void copyProperties(Properties source) {		Enumeration names = source.propertyNames();		while (names.hasMoreElements()) {			String name = (String) names.nextElement();			String value = source.getProperty(name);			setProperty(name, value);		}	}