how to open new DOS window from java application

[Sankar Ravula]

Hi,
I m running my java application from a command window. I want my java application to open another command window and run the specified batch file in that window. My java code is as follows, its not working
public class MyTestClass
{
public static void main(String args[])
{
System.out.println("Trying to get the Runtime");
Runtime rt = Runtime.getRuntime();
System.out.println("Got the Runtime" + rt);
try
{
rt.exec("C:/WINNT/system32/cmd.exe /C start C:/MyBatchfile.bat");
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
Pls... help me in solving the above problem.
Thanks,
Sankar Ravula

[Pradeep bhatt]

rt.exec("C:/MyBatchfile.bat");

[Sankar Ravula]

Hi Pradeep,
that wn't work
Sankar

[Pradeep bhatt]

 
Process p = rt.exec("C:/WINNT/system32/cmd.exe /C start c:/MyBatchfile.bat");
int status = p.waitFor();

 

print the status

[Dirk Schreckmann]

Perhaps the following will work better.

public class Foo
{
  public static void main(String[] args) throws Exception
  {
    Runtime.getRuntime().exec("CMD /K start myBat.bat");
  }
}

[Pradeep bhatt]

What is the option k?

[Jason Kretzer]

From running the command
C:\>help CMD
on a Win2k machine, you get a list of the options it takes. Option /K is listed as Carries out the command specified by string bu remains.
So I guess it opens a DOS window and runs the command and then stays open after the command is run.
Best Regards,

[Sankar Ravula]

Hi Pradeep,
Thanks, its working
Sankar