read properties file in Java

getPropertiesFromFile.java

public Properties getPropertiesFromFile(String fileName) {
        Properties properties = null;
        try {
            properties = new Properties();
            properties.load(getClass().getClassLoader().getResourceAsStream(fileName));
        } catch (IOException e) {
            System.err.println("Error detected");
            e.printStackTrace();
        }
        return properties;
    }