Finding a file in the current executable jar file.

Question

Hi all,
I am writing a little command line type application and I thought it would be neat to embed it's 'help file' into it's executable JAR file.
Please can someone show me how to code my application to extract a file from the JAR file from which the Main.class also came?
(Is that possible?)
I've been looking around, I can find out how to work with a different JAR file but NOT how to examine the currently 'executing' one.
Many thanks,
- jon.

Answer 1

Excellent! Thank you very much. It's easy when you know how. This works a treat!:
     private static void printHelp() {
          InputStream helpFile = Misql.class.getClassLoader().getResourceAsStream("doc/MISQLhelp.txt");
          if (helpFile == null) {
               _out.println("Help file: doc/MISQLhelp.txt not found.");
               return;               
          try {
               int c;
               while ((c = helpFile.read()) != -1)
                    _out.write(c);
               helpFile.close();
          } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          return;
     }