Accessing RUN through java programming

Sir,
i need to develop a java application t access "run" in start menu.How can i access the run menu through java programming.?I want to run the program in the run command when we input command through the java program..please help me..if you have the code palese send it tio me please..........

But I cant access the drives for eg: I wrote c:\programfiles as input but i got an exception like this
error=3
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(ProcessImpl.java:81)
at java.lang.ProcessImpl.start(ProcessImpl.java:30)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:451)
at java.lang.Runtime.exec(Runtime.java:591)
at java.lang.Runtime.exec(Runtime.java:429)
at java.lang.Runtime.exec(Runtime.java:326)
at ex.main(ex.java:10)
how can correct this error...

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