IOException--CreateProcess!!!!

Question

Hi every body.
Does someone know the meaning of this error?
java.io.IOException: CreateProcess: prueba error=2
at java.lang.Win32Process.create(Native Method)
at java.lang.Win32Process.<init>(Win32Process.java:63)
at java.lang.Runtime.execInternal(Native Method)
at java.lang.Runtime.exec(Runtime.java:566)
at java.lang.Runtime.exec(Runtime.java:428)
at java.lang.Runtime.exec(Runtime.java:364)
at java.lang.Runtime.exec(Runtime.java:326)
at org.apache.jsp.ChangeDirBajaRCXX_jsp._jspService(ChangeDirBaja
p.java:185)....................................
It's the result of this code:
cmd="prueba.bat";
exec(cmd);
and the prueba.bat is really simple:
@echo off
lejos HelloWorld
'lejos' is an exe file.
If i try 'lejos HelloWorld' from the MS-DOS it runs ok.
Thanks!!

Answer 1

Hi!
Hi Stevejluke.
The file 'prueba.bat' is in the current working directory and in the PATH environmental variable and 'prueba.bat' runs from the command line.
I'm afraid is something wrong with the Runtime.exec method. In fact in this link:
http://java.sun.com/products/jdk/1.2/docs/api/java/lang/Process.html
i've found this:
"The Runtime.exec methods may not work well for special processes on certain native platforms, such as native windowing processes, daemon processes, Win16/DOS processes on Win32, or shell scripts."
But i'm using j2sdk1.4.1_01, not 1.2. i don't understand very well this information so i don't know how to resolve the problem.
Thanks very much!!