Launchin a jar via .bat

Hello,
I am having trouble launching a jar file from a batch file. I'm running Windows XP Pro 2002. Here is what is in my bat file. It starts the program but it also leaves the dos window active.
Also, Is there a better alternative to using .bat files?
echo off
cd\JavaJeff\Java Jre\jre\bin\
java -jar calculatortwo.jarThank you.

The reason I tried to change dir is because the 'prompt' just flashes on and off quickly when I execute the batch file, and that's it. So I added a pause to the .bat to get a glimpse and It seemed to me that the jar file was not found. Then I tried the cd and it worked.
When I run the batch file as you have suggested I get the same behavior, just a quick flash.
Now, why doesn't it work the way you suggested. I would like to understand all of this. By the way I changed the bin;%PATH% to bin:%PATH% .
Thanks

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