code: public static Util init(final String[] argv, final String exec_name) {
          if (_instance == null) {
              _instance = new Util(argv, exec_name);
          }
          return _instance;
      }
docs: Create and get the singleton object reference.
  <p>
  This method returns a reference to the object of the Util class. If the
  class singleton object has not been created, it will be instanciated
  
  @param argv      The process argument String array
  @param exec_name The device server executable name
  @return The Util object reference