I know that I'm ignorant about this but what is it and why do I get these update requests when I'm online with comcast? I have windows XP. Thanks!!
Java is both a language and a "runtime enviroment".
You most likely mean the runtime, which allows programs written using the java-language or other language to run independent of the used operating systems, so its enough to know its used by programs and in general its a good thing ;)
I don't know comcast, but its safe to update java.
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