code: private static void printVersion() {
  
          System.out.println("jcheck_nrpe version " + JNRPEClient.class.getPackage().getImplementationVersion());
          System.out.println("Copyright (c) 2013 Massimiliano Ziccardi");
          System.out.println("Licensed under the Apache License, Version 2.0");
          System.out.println();
      }
docs: Prints the application version.