Running DOS program from java

Hi all,
I'm trying to execute a dos program using:
runtime.exec("dos_prog.exe")
THE PROBLEM : in this way I can run only
WINDOWS programs and NOT DOS progs.
What to do ???

Hi all!
I'm tring to run a file.bat that execute an exp from locale Oracle server. But when I run it, in dos consol it appaire just only the EXP USER/PASS ....., and don't execute never!! Really, the files of .dmp and of .log, they are created, ...but empty!!!! Why???
........ source .......
Runtime rt = Runtime.getRuntime();
Process rtProcess = rt.exec("cmd.exe /C file.bat");
// wait for command to terminate
try      {
     rtProcess.waitFor();
catch     (InterruptedException ire)
     System.err.println("Thread interrupted " + ire.getMessage());
// check its exit value
if (rtProcess.exitValue() != 0)
System.err.println("exit value was non-zero");
// close stream
bReader.close();
........ file.bat .......
@echo off
EXP USER/PSW FILE=EXPFILE.DMP LOG=FILELOG.LOG OWNER=MYOWNER
If you want, you car reply me directly at [email protected] - Thanks very much!!!

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In Linux(ubuntu) I write this command to open the program window
$ paraFoam -case /home/saud/OpenFOAM/OpenFOAM-1.5/run/tutorials/icoFoam/cavity/In my java code I wrote it like this("/home/saud/OpenFOAM/OpenFOAM-1.5/bin/" is the path of the program):
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while ((line = buf.readLine()) != null) {
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buf.close();
int returnCode = myProcess.waitFor();
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but the program is not opening
Edited by: Saud.R on Apr 11, 2009 3:37 AM

Welcome to the Sun forums.
I am not sure of the answer to your question, but people who use Processes regularly, warn other users to ensure they are also doing something with the error stream of the process, otherwise it can hang as you describe.

Problem while running dos command from java program

Dear friends,
I need to terminate a running jar file from my java program which is running in the windows os.
For that i have an dos command to find process id of java program and kill by using tskill command.
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when i execute this command in dos prompt, it gives the processid in the ProcessList.txt file. But when i execute the same command in java program it keeps running mode only.
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          } catch (Exception e) {
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if i give process.waitFor(), then it's in running mode and program is not completed.
Colud anyone please tell me how to handle this situation?
or Is there anyother way to kill the one running process in windows from java program?
Thanks in advance,
Sathish

Hi masijade,
The modified code is,
class StreamGobbler extends Thread
    InputStream is;
    String type;
    StreamGobbler(InputStream is, String type)
        this.is = is;
        this.type = type;
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}when i execute the above code, i got output as,
Execing cmd.exe /C wmic process where "name='java.exe'" get commandline,processid
and keeps in running mode only.
If i execute the same command in dos prompt,
CommandLine
ProcessId
java -classpath ./../lib/StartApp.jar;./../lib; com.abc.middle.startapp.StartAPP 2468
If i modify the command as,
cmd.exe /C wmic process where "name='java.exe'" get commandline,processid > 123.txt
and keeps in running mode only.
If i open the file when program in running mode, no contents in that file.
If i terminte the program and if i open the file, then i find the processid in that file.
Can you help me to solve this issue?

Oops - meant to say "Controlling Legacy DOS program from Java ..."

Sorry - don't know what I wasn't thinking - muddled up my post title!
As part of my final year project, I'm trying to control a camera mount automatically using stepper motors. This will then be used for robotic navigattion. Most of my code is written in Java, but I have been given some old C code to control the motors with. One loaded, it sits in an infinite loop that waits for keyboard input, resonds, loops, and so on ...
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Running DOS program from java

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