How to Disable Java in Chrome
Oracle's Java scripting language has been the target of quite a few security attacks and currently (1/12/2013) it is vulnerable to a rather serious kind of attack. In fact, the United States Department of Homeland Security is warning people to disable it. So...here's how you can disable Java in the Chrome browser:
Open Chrome (naturally)
Type chrome://plugins into the location bar at the top of the browser.
Find the Java plugin on the list and click the link beneath it that reads "Disable".
It may be that you'll find important sites for you that won't work with Java disabled. If that happens, you'll probably have to re-enable Java by following the steps above and re-enabling. If you DON'T have a problem with sites, however, you're probably going to be safer in the long run by just leaving Java disabled permantently.
You may even want to consider uninstalling Java from your machine entirely if you determine you don't need it.
To uninstall Java from your Windows machine go to Control Panel find "Add/Remove Programs" (or click "Uninstall a program" on newer versions of Windows) and find "Java" on the program list. Select it and click "Uninstall".