Java - Process Hangs

I am calling a command as below:

Process proc = Runtime.getRuntime().exec(JavaAppCommand);

Although it starts the java command of another application after few seconds it hangs. I don't see any error and it stays like this forever! I have set stdErr as well but dont see any errors in display.

Java experts - Kindly assist,

Thanks,
Puneetha

 

try { 
  Process p = Runtime.getRuntime().exec(JavaAppCommand);
  BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
  String line = null;
  while ((line = in.readLine()) != null) {
    System.out.println(line);
  }
} catch (IOException e) {
    e.printStackTrace();
}

Code (markup):

Source

 

Thanks friend. Really appreciated.
The code you have mentioned i was already using it.

I found out by using this helpful tutorial.