OK,I,v tryed in my program, the answer is NO. It runs well when I'm editing it, but after I exported it ,it can't run anymore. I,ve tryed to read some srtings from an TXT file,and here comes some of the code path = System.getProperty("user.dir"); try { fis = new FileInputStream(path + "/doc/Data.txt"); try { read = new InputStreamReader (fis, "UTF-8"); B_Reader = new BufferedReader(read); } catch(UnsupportedEncodingException e) { e.printStackTrace(); } catch(IOException e) { e.printStackTrace(); } } catch(FileNotFoundException e) { e.printStackTrace(); }

I think the problem is I didn't find the right way to export maybe it there's some other work need to be done before I export the Program

I think that the discussion On creating and saving files (http://www.greenfoot.org/topics/195) will answer your question.

Thanks for the response. But what if I want to shar it with my friend in JAR form or a web page? Can I have my own files packed in?

I tried and it works, thanks