The Java Runtime Environment 7 Update 51 is outdated, but users can download the latest available update from Oracle.com. It is important to download the most up-to-date format, which includes security and bug fixes.
Oracle has two updates, the 79 and 80, available for download from its website as of September 2015. The differences between the two versions include patch fixes, which help the computer's CPU perform better. Patches also fix any issues that may have occurred over the course of the software's use or been caused by malicious software. Once Java is updated, configure the automatic updates option so that the program updates itself when a newer version releases.