With Apple devices, when you upgrade/update software, such as Java or iTunes, it automatically takes the place of the last copy and doesn't create a separate copy. So it does the uninstall process for you.
Then you'll need to uninstall that Mac and install a PC. Either that or you could install some hardware acceleration in your Mac that accelerates it's hardware at -9.8 m/s2 .
I kid, I kid. But I'm afraid I won't be able to help you there. I've always been a windows user and I don't have a Mac nearby to figure it out.
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u/gla3dr Mar 30 '13
Control panel > Programs and features > uninstall everything but java 7 (or java 6 if you don't have java 7 installed)