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.
Your use of this web site or any of its content or software indicates your agreement to be bound by these Terms of Participation.
Copyright © 2015, Oracle and/or its affiliates. All rights reserved. Oracle and Java are registered trademarks of Oracle and/or its affiliates. Other names may be trademarks of their respective owners.