Java has become an absolute focal point in the cyber threat landscape. It plays a major role in attacks against every major platform, including mobile. Apple only patched a Java security vulnerability which was being exploited by Flashback last week. Java has irreparably tarnished the image of OSX as free from malware, but we now have a huge botnet to further damage the myth of a malware-free OSX. Until the day comes where Oracle visibly commits to security the best course of action is to uninstall Java.
Source: https://threatpost.com/java-osx-and-cross-platform-nightmare-040912/76419/