Runtime, Processes, getting Output, Problems

Question

Hello,
i hope, you can help me with the following problem. I'm trying to get the output of processes from the Runtime.
It does fine with a command like "netstat -a". With a command like "ftp" or "telnet it does not work. I don't know why.
You can test my program, for i did summarize the problem in a short main method.
public class Test {
     public static void main(String args[]) {
          Runtime rt = Runtime.getRuntime();
          Process proc;
          try {
               // Das Konsolenkommando, das ausgef?hrt werden soll
            // String command = "cmd.exe /C netstat -a";          // Variante 1 funktioniert
               String command = "cmd.exe /C telnet";               // Variante 2 funktioniert nicht
               //String command = "cmd.exe /C ftp";                // Variante 3 funktioniert nicht
               // Prozess erzeugen
               proc = rt.exec (command);
               // Stream f?r Fehlermeldungen abh?ren
               StreamGobbler errorGobbler =
                    new StreamGobbler(proc.getErrorStream(), "ERROR");
               // Stream f?r normale Ausgabe abh?ren
               StreamGobbler outputGobbler =
                    new StreamGobbler(proc.getInputStream(), "OUTPUT");
               errorGobbler.start();
               outputGobbler.start();
               // Warten, bis der Prozess beendet ist
               proc.waitFor();
            // Ergebnis anzeigen
            System.out.println("RESULT: ");
               System.out.println(errorGobbler.buff.toString());
               System.out.println(outputGobbler.buff.toString());
          } catch (Exception ex) {
               ex.printStackTrace();
public class StreamGobbler extends Thread {
          InputStream is;
          String type;
          StringBuffer buff = new StringBuffer();
          StreamGobbler(InputStream is, String type) {
               this.is = is;
               this.type = type;
          public void run() {
               try {
                    InputStreamReader isr = new InputStreamReader(is);
                    BufferedReader br = new BufferedReader(isr);
                    String line = null;
                    while ((line = br.readLine()) != null)
                         buff.append(line + "\n");
               } catch (IOException ioe) {
                    ioe.printStackTrace();
     }

Answer 1

no i tried that already in an client-server-application. there WAS a delay, but it worked. But i had the same problem with such commands then. I simply get back nothing, althoug the command prints something on the console.
Unfortunately or luckily (its both, i think ;-)) i found just now that:
from http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_d.htm
".. However, you cannot read output from some DOS commands on Windows 95/98. This is bug 4109888 at Sun, but it is actually a Microsoft bug/poor design. Windows programs that explicitly use a handle to the console ("CON" or "CON:") instead of stdin and stdout cannot be used as subprocesses to Java. The Win95 FTP program is an example of such a program. Windows provides no convenient way for Java to redirect the input and output of such processes from the console to input and output pipes. The only workaround is to use a different implementation of the program that does not use the console directly."
Probably that's my problem, or?