From O'Grady's PowerPage: On Wednesday, Apple released iOS 7.0 and iOS 7.0.1 (depending on your iOS device), the long-anticipated new version of its operating system for its iPhone, iPad and iPod touch devices.
Java is used both by applications and web browsers. However, the nature of Java means that it is susceptible to security breaches, i.e., using Java could make it easier for bad people to get their hand on your data. For this reason, Apple has chosen to stop including Java with OS X for security reasons and because most people do need it.
Apple today released Java for OS X 2012-006 which delivers improved security, reliability, and compatibility.