Java is exactly like the typical holes in Windows, because it is the most prevalent problem with Windows browser plugins: securityplanet.com/news/article.php/3925356/RSA-Java-is-the-Most-Vulnerable-Browser-Plugin.htm
Now, as a counterpoint to my "it's an Apple problem", the issue with Windows and Java stems from people not updating their Java plugins. Since Apple does this for the user by including it as part of Software Update, in general Apple machines are very likely to be more up to date than Windows machines.