Executing a file within java

Hey,
I have what seems like a simple problem. I want to write code that executes a jar file. For example I want a to write a class that executes a executable jar file. I have created the jar file called 1.jar and now I want to execute it in the code of another java program Can anyone help me accomplish this with an example. I have tried using exec and its not working right here is some of my code
public void runFile()throws Exception
Runtime.getRuntime().exec(". 1.jar");
it comes up with the error
Exception in thread "main" java.io.IOException: CreateProcess: . 1.jar
error=2
at java.lang.Win32Process.create(Native Method)
PLEASE HELP.
thanks

Your awesome thanks,
That worked, however I have one more question for you. Will this run on machines that are just using Java runtime environment?
basically will this work on any machine with java installed?

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Executing external files within java

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http://java.sun.com/j2se/1.4.1/docs/api/java/lang/Process.html
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[http://oracle.ittoolbox.com/groups/technical-functional/oracle-jdeveloper-l/run-an-exe-file-using-oracle-database-trigger-1567662]
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You are totally right, I got this as mistake copy paste. I'm just having a Java utility for running external files outside Oracle DB, this is the method runFile()
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Thanks for tracing teh issue to that details ;) hope you coul help.

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Executing a file within java

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