If you want to download and install Java JDK 18 on Windows 11/10 computer, you will also have to set up a Path in Environment Variable.

Choose the version that matches your operating system (e.g., Windows x64 for 64-bit Windows 10). Click the download link next to the version you want to download.

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. Under what ...