Oracle will start auto-updating Windows 32-bit, Java Runtime Environment (JRE) users from JRE 6 to JRE 7 in December 2012.
The Java auto-update mechanism is designed to keep Java users up-to-date with the latest security fixes.
Nevertheless if you would like to continue to have both versions, JRE 6 and JRE 7 can be installed on the same computer.
Oracle strives to make new versions of Java backward compatible with earlier versions and the vast majority of Java applications written for older versions of Java will work –without any change- on newer versions of the JRE. Any change in the code –even if only to fix a security vulnerability- has the potential to cause an application to stop working properly.
See the Java SE documentation for APIs, Developer guides, Release Notes and more.
Developers can download the JDK for all supported operating systems from the Oracle Technology Network.During the automatic update from JRE 6 to JRE 7, if a user only has one version of Java 6 the auto-update process will replace that JRE 6 with the latest version of JRE 7 leaving only JRE 7 in the system.The auto-update process updates only the latest JRE on your system.OS X users can only have one JRE available through web browsers so OS X users will only have JRE 8 available through the web browser after the upgrade On Windows, the auto-update process updates only the latest JRE on your system.If you would like to remove older JRE versions from your system please use our Java Uninstall Tool to identify and remove older versions.The Video Player runtime lets you effortlessly reach over 1.3 billion people across browsers and OS versions with no install — 11 times more people than the best-selling hardware game console.