Spawning a new process from a java application

Question

Hi,
Was wondering if there is any way to spawn a new java application (not as a Thread) from a running application?
ie, class A and class B are both applications: both have public static void main() methods, and i want class A to spawn a class B application in a separate console window
I have tried the samy by using java.lang.Runtime and java.lang.Process class but I could not satisfy myself.
Do you guys have any idea...??

Answer 1

Hi,
I tried as you instructed. See, there is one batch file named s.bat in the current directory and I am trying to run my application which in turn executes following command in Runtime.getRuntime().exec() method,
start command /k s.bat
on execution of this line it throws IOException as,
Executing : start command /k s.bat
java.io.IOException: CreateProcess: start command /k s.bat error=2
at java.lang.Win32Process.create(Native Method)
at java.lang.Win32Process.<init>(Unknown Source)
at java.lang.Runtime.execInternal(Native Method)
at java.lang.Runtime.exec(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at RuntimeTest.main(RuntimeTest.java:17)
line no. 17 goes like this,
Process p = Runtime.getRuntime().exec(cmd);
Am i wrong at any strage or what..?? I suggest you also try to do the same. I am working on Windows NT 4.0 platform. It may be more restrictive....?? I don't know exact reason why it is not allowing me to do so???
Any comment??