Windows 64-bit operating system comes with both 32-bit and 64-bit Internet Explorer (IE) browsers. 32-bit IE comes as a default. There are different versions of Java software available for download depending on whether you are using 32-bit or 64-bit IE browsers.
Java for 32-bit Internet Explorer
Users should download 32-bit Java software, if they are using 32-bit IE. For downloading and installing 32-bit Java on your system
Java for 64-bit Internet Explorer
Users should download 64-bit Java software, if they are running 64-bit IE. For downloading 64-bit Java click
64-bit manual download
Follow these instructions for installing 64-bit Java on your system.
Click Windows XP/Vista/2003/2008 (64-bit). The File Download dialog box appears.
Choose the folder location. (Save the file to a known location on your computer, for example, to your desktop) and Click Save.
Close all applications including the browser.
Double-click on the saved file icon to start the installation process
Java for both 32-bit and 64-bit IE browsers.
If you use both 32-bit and 64-bit browser interchangeably, you need a Java Plug-in for each browser. Hence you will need to install both 32-bit and 64-bit Java respectively.