I run Windows 7 64-bit. I have the Java JRE 32-bit installed. I use Firefox almost exclusively for web browsing. I see there is a 64-bit JRE, but I can't really tell what use it is.

The Java Runtime Environment (JRE) is a software package developed by Oracle Corporation. It's designed to provide a runtime environment for applications written in Java programming language.

The Java Runtime Environment (JRE) is a software package developed by Oracle Corporation. It's designed to provide a runtime environment for applications written in Java programming language.