Java 8 Update 66 has been released along with Java 8 Update 65. If you already have Java installed on your system, the automatic update will only notify you of update 65. If you install update 65, it will show you that you have the latest version of Java installed.
Let’s first understand the difference between Java 8 Update 65 and 66 and then we’ll go on to list the direct download links for Java 8u66 offline installers.
Difference between Java 8 Update 65 and 66
Java 8 Update 65 is a critical patch update (CPU) which includes all the essential security fixes which are required for all the systems which have Java installed in them. Java 8 Update 66 is a patch set update which contains all the security fixes of update 65 and additional fixes to non-critical problems. Installing updated 66 is optional but recommended because you will get the latest fixes of all the problems in Java.
Please note that I have not been able to find the separate JRE downloads of Java 8 Update 66. The following links will let you download the complete development kit Java 8 update 66 JDK which will let you install the runtime environment of update 66.
How to check which version of Java is installed on your system
If you want to see which version of Java is installed and working on your system, you have to open command prompt and run the following command:
You can also check the version by going to Control Panel –> Java. Click the About button.
Uninstalling outdated versions of Java
If you have an outdated version of Java installed on your system, the setup installer will identify that and will let you uninstall the outdated version immediately during installation.