Running a batch file inside a jar

Question

HI all
I created a jar file , in which i need to run a batch file , so i wrote a main class to execute the run the batch file , but when iam running the jar it is searching for the given batch file out side the jar.
my code is some thing like below
     public static void main(String args[])
          try
               Runtime rt=Runtime.getRuntime();
               Process process=rt.exec("%DIRNAME%/start.bat");
   InputStreamReader reader =
                  new InputStreamReader ( process.getInputStream () );
               BufferedReader buf_reader =
                   new BufferedReader (  reader );
                String line;
                while ((line = buf_reader.readLine ()) != null)
                             System.out.println (line);
          catch (IOException e) {
                System.out.println (e);
     }so please help me.. is it the problem in specifing the path...?
are does it have any other method to read the stream functions ..
thanks in advance
sam

Answer 1

I don't think this will work. You could not go to a command line and enter, "%DIRNAME%/start.bat" if start.bat was inside a jar - the CLI doesn't know how to read a batch file inside a jar.
I think it would work to programmatically read the lines of start.bat (when it is inside the jar) into an array of Strings and use Runtime.exec with the array as the argument.
It would also work to extract the start.bat file, then execute it using Runtime.exec.