i'm trying to clean my computer out and get some more memory built up, i dont see why i need 3 of these. Can 2 of them be deleted atleast?
If you really need the space though and you don't use Java much then you can remove them, but I'd still advise against it. If you ever need to use it, it can cause errors and even worse a security hole allows an attacker to maliciously take over your machine (an extreme case.)
If you are running out of space the best thing to do is buy a new hard drive. They are so cheap these days that upgrading your storage isn't much of a financial problem.