Over the past week there have been multiple updates concerning Java. Here is a brief explanation of what Java is, straight from Oracle, Javas developer,
What is Java technology and why do I need it?
Java is a programming language and computing platform first released by Sun Microsystems in 1995. It is the underlying technology that powers state-of-the-art programs including utilities, games, and business applications. Java runs on more than 850 million personal computers worldwide, and on billions of devices worldwide, including mobile and TV devices.
Why do I need Java?
There are lots of applications and websites that won't work unless you have Java installed, and more are created every day. Java is fast, secure, and reliable. From laptops to datacenters, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere!
Java at Oracle
Now there has been a lot of concern over people exploiting security flaws in Java,
Oracle Java 7 Security Manager Bypass Vulnerability
Oracle Security Alert for CVE-2013-0422
If you want to skip the technical side, my recommendation is to update Java as soon as possible, so here is a link to the Oracle site to download the latest software,
Latest Java Download
As always, if you have any questions, feel free to contact me.