File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Java in General and the fly likes telnet in Win2000/XP using java runtime.exec ?? Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Java in General
Bookmark "telnet in Win2000/XP using java runtime.exec ??" Watch "telnet in Win2000/XP using java runtime.exec ??" New topic
Author

telnet in Win2000/XP using java runtime.exec ??

Prithvi Raj
Greenhorn

Joined: Jul 13, 2001
Posts: 9
i need to start the telnet session from java . the following code works fine in 98/ nt 4.0 but it does not work in win2k/XP . if returns an exitvalue of -1 thats all. can any one tell me why . is it because the telnet program in these environments seem to work differently because they do not open the window as in 98 or NT 4.0 . any work arounds
Process p = Runtime.getRuntime().exec("telnet");
BufferedReader br = new BufferedReader(new
InputStreamReader(p.getInputStream()));
BufferedWriter bw = new BufferedWriter(new
OutputStreamWriter(p.getOutputStream()));
bw.write("1");
bw.flush();
String line;
while ((line = br.readLine()) != null)
{
System.out.println(line);
}
br.close();
bw.close();
System.out.println(p.exitValue());


prithvi
Christopher Dixon
Greenhorn

Joined: Jan 30, 2002
Posts: 22
Try this:

You'll have to check the OS name using System.getProperty("os.name") because the command strings are different for 95/98/NT/2000.
The question I would ask is whether you truly need to use Runtime.exec()? There are quite a few Java Telnet implementations that are available and don't require you to compromise platform independence.
I've used the ORO packages. They haven't been updated in a while, but then again neither have most of the protocols that they represent.
Check out the API:com.oroinc.net
Chris
Prithvi Raj
Greenhorn

Joined: Jul 13, 2001
Posts: 9
hi Christopher
Thanx a lot for u r input. it is working great. i did not want to use that api was because the telnet session data acts as interface to another third party software.
thanx again
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: telnet in Win2000/XP using java runtime.exec ??