throw new NumberFormatException("Parameter " + key + " is missing or malformed (should be true/yes or false/no)");
throw new NumberFormatException("Parameter " + key + " = " + booleanS + " is missing or malformed (should be true/yes or false/no)");
	public boolean getBooleanProperty(String key) {		String booleanS = getProperty(key);		if (booleanS != null) {			if (booleanS.equalsIgnoreCase("yes") || booleanS.equalsIgnoreCase("true")) {				return true;			} else if (booleanS.equalsIgnoreCase("no") || booleanS.equalsIgnoreCase("false")) {				return false;			}		}		throw new NumberFormatException("Parameter " + key + " is missing or malformed (should be true/yes or false/no)");	}