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JDK and JRE install on 64-bit Windows 7

Windows x64 64-bit mode


· 64-bit OS, 32-bit Browsers:
Firefox 2, Firefox 3.0.x, Firefox 3.5.x,
or Firefox 3.6

· 64-bit OS, 64-bit Browsers:
IE 8


download JDK 6 Update 20 76.29 mb self-installing executable. Select JDK 6 Update 20 then your platform and choose Windows (or whatever your platform. Windows 7 64-bit, you will need both 64-bit JDK for the deskop and a 32-bit JRE for 32-bit browsers.) If both browsers don’t show up in the Java control panel, manually add the missing one. If you have a 64-bit browser, you can run your Applets and Webstart in 64-bit too. All the common Windows browsers are still 32-bit.


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  1. Neeraj Parashar
    August 16th, 2011 at 15:01 | #1

    I have a Windows 7 64 bit machine with JRE 32 bit under Program Files (x86) and JRE 64 bit under Program Files.

    I have an application which runs on 32 bit access some files from SysWOW64 but when I run the application, it gives me an error stating that file cannot be found, which proves that it is not looking it under SysWOW64. I tested the same application on another 64bit Windows 7 having only JRE under Program Files (x86) where it is working fine. To replicate the issue I myself installed 64bit JRE on that machine and I experienced the same issue.

    When I ran the application from command prompt with explicit pointing of JRE like “C:Program Files (x86)javajre6binjava” -jar XXXX.jar
    The application ran fine, so I think multiple JRE installation must have messed up with my java settings.

    I would appreciate your help in configuring my machine so as to use correct version of JRE.

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