Java is considered unsafe, but if you do update it it's somewhat safer than if you don't.
Few people need it. So it's best to uninstall Java from Control Panel, and only reinstall it (latest version) from java.com if it turns out you do need it.
Am I right to be cautious about updating Java? My computer keeps asking me to do so and I dont know if I really need it, nor do I know if it is safe. Please help.