windows 7 - Why won't cmd exit after execution of batch file?

Why won't cmd exit after execution of batch file?

I have tried:

"C:\Program Files (x86)\Java\jre6\bin\javaw.exe" -Xmx1024M -Xms1024M -jar Jilko.jar

and

@echo off
"C:\Program Files (x86)\Java\jre6\bin\javaw.exe" -Xmx1024M -Xms1024M -jar Jilko.jar
exit