Invoking exe file through java program

I have one exe file,which i want to invoke it from java program.I have used Runtime class to execute the exe, but it throws an exception
java.io.IOException: CreateProcess: afp2web.exe -q -PDF -c -fm samples\medform.a
fp 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 Afp2PdfDemo.main(Afp2PdfDemo.java:7)
However if i give the absolute path of exe file then it doesn't throw an exception but at the same time,it doesn't the do the expected job.
Can somebody throw some light on this?
Thanx in advance
Regards,
Pulak

Have you tried also supplying the absolute paths of the file arguments like "samples\medform.a"?

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