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  1. #1
    New Lounger
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    Question Java won't install

    After years of having no trouble with Java, a few weeks ago it simply stopped working. After a few rounds of trying to update Java I gave up and uninstalled all versions (I think there were three at the time). Reboot to clean system. Even so, I cannot get Java to work now. After an install on a freshly rebooted machine with no previous version in place, an attempt to verify the installation (following Oracle's suggestion) I get a general exception, "Name: jreVerification, ClassNotFoundException: jreVerification.class." The Java console (after several lines of adding components) reads as follows:

    ================================================== ============================
    basic: Added progress listener: sun.plugin.util.ProgressMonitorAdapter@5bcf3a
    network: Cache entry not found [url: http://java.com/jsp_utils/, version: null]
    network: Cache entry not found [url: http://java.com/jsp_utils/jreVerification.class, version: null]
    network: Connecting http://java.com/jsp_utils/jreVerification.class with proxy=DIRECT
    network: Connecting http://java.com:80/ with proxy=DIRECT
    network: Cache entry not found [url: http://java.com/jsp_utils/jreVerification/class.class, version: null]
    network: Connecting http://java.com/jsp_utils/jreVerification/class.class with proxy=DIRECT
    network: Connecting http://java.com:80/ with proxy=DIRECT
    java.lang.ClassNotFoundException: jreVerification.class
    at sun.plugin2.applet.Applet2ClassLoader.findClass(Un known Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(U nknown Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Un known Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Un known Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unk nown Source)
    at sun.plugin2.applet.Plugin2Manager.initAppletAdapte r(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager$AppletExecutionR unnable.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
    basic: load: class jreVerification.class not found.
    java.lang.ClassNotFoundException: jreVerification.class
    at sun.plugin2.applet.Applet2ClassLoader.findClass(Un known Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(U nknown Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Un known Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Un known Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unk nown Source)
    at sun.plugin2.applet.Plugin2Manager.initAppletAdapte r(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager$AppletExecutionR unnable.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
    Ignored exception: java.lang.ClassNotFoundException: jreVerification.class
    basic: Dialog type is not candidate for embedding
    ================================================== ============================

    and then it dies with the General Exception dialog box described above. Attempts to run other java applications leads to similar "ClassNotFoundException" failures, though of course with different classes missing.

    At this point I'm at a loss for how to proceed. All I can tell is that in the above example java didn't find jreVerification, but there's no indication of why, not of what I have to do in order to find it. Any suggestions?

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  3. #2
    Plutonium Lounger Medico's Avatar
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    Do you have any apps that use Java? Do you routinely go to sites that require Java? If no to both why bother. There has been much discussions here over the last month on the security concerns with Java. If it's not something you miss, leave it off.

    I would try it for a while and see if you miss it.
    BACKUP...BACKUP...BACKUP
    Have a Great Day! Ted


    Sony Vaio Laptop, 2.53 GHz Duo Core Intel CPU, 8 GB RAM, 320 GB HD
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  4. #3
    New Lounger
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    Yes, I am impacted. So far I've had to use another machine, but this isn't a viable long-term solution.

  5. #4
    Plutonium Lounger Medico's Avatar
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    I wonder if an app you have installed uses Java and is blocking somehow. Have you tried to use an app such as CCleaner to look for remnants of Java. Perhaps a remnant is blocking the installation.

    If you have an app that uses Java, you might try uninstalling the app then installing Java.
    BACKUP...BACKUP...BACKUP
    Have a Great Day! Ted


    Sony Vaio Laptop, 2.53 GHz Duo Core Intel CPU, 8 GB RAM, 320 GB HD
    Win 8 Pro (64 Bit), IE 10 (64 Bit)


    Complete PC Specs: By Speccy

  6. The Following User Says Thank You to Medico For This Useful Post:

    gould (2012-10-05)

  7. #5
    Super Moderator jwitalka's Avatar
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    See if the answer given here is of any assistance:
    http://answers.microsoft.com/en-us/i...2-e9e6373bfd21

    Jerry

  8. The Following User Says Thank You to jwitalka For This Useful Post:

    gould (2012-10-05)

  9. #6
    New Lounger
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    Thank you both for these suggestions, but it still doesn't make any difference. I removed Java entirely, removed one application that used what appears to be its own local version of JRE, rebooted, ran CCleaner, rebooted, removed orphaned directories from old v.6 installations (under the Sun name!), then went to java.com and installed the current version (32 bit since it has to work in my 32 bit browser). This installation (as always) said that the installation was successful BUT when testing it (using the Oracle link "Do I have java?") I once again got the ClassNotFoundException for jreVerification.class.

    This is independent of browser. The same thing happens in Firefox, Opera, IE, and Chrome, so I'm sure that it's not a browser issue.

    I should also mention that there are two applications that I did not remove that appear to be using a local Java installation buried within their directory hierarchies: Acrobat and TurboTax. I haven't touched TurboTax since April 17, and I don't think that Acrobat has updated itself, but in either event, given their local installations I hope they won't affect the entire system as in my case.

    Looking back at the Java Console, just before the Exception is thrown there are apparently a few attempts to locate the thing not found:

    network: Cache entry not found [url: http://java.com/jsp_utils/, version: null]
    network: Cache entry not found [url: http://java.com/jsp_utils/jreVerification.class, version: null]
    network: Connecting http://java.com/jsp_utils/jreVerification.class with proxy=DIRECT
    network: Connecting http://java.com:80/ with proxy=DIRECT
    network: Cache entry not found [url: http://java.com/jsp_utils/jreVerification/class.class, version: null]
    network: Connecting http://java.com/jsp_utils/jreVerification/class.class with proxy=DIRECT
    network: Connecting http://java.com:80/ with proxy=DIRECT

    FWIW, none of those URLs are found when I type them into a browser. Where should jreVerification.class be found? If you can run the "Do I have Java?" test and are successful, where do you find jreVerificaiton.class? I'm not so much interested in this specific class, merely trying to understand why it's not found.
    Last edited by gould; 2012-10-05 at 19:02.

  10. #7
    5 Star Lounger
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    Where are you trying to install Java from? Try downloading and installing from http://www.oracle.com/technetwork/ja...ads/index.html. Make sure you download the version that matches the bitness of your browser.

  11. #8
    Super Moderator jwitalka's Avatar
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    Did you try running with all security software disabled as a test as suggested in the link I gave you?

    Jerry

  12. #9
    New Lounger
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    java install

    gould-you may have to install -"both"-32 bit and 64 bit java to get it working

  13. #10
    5 Star Lounger
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    Try revouninstaller free version and see if it list java in programs found if it does double click it and choose advanced option, then click scan to list all leftovers in system and registry. This should get rid of all leftovers from uninstall and may allow you to reinstall Java.
    Last edited by curiousclive; 2012-10-06 at 08:40.
    Clive

    All typing errors are my own work and subject to patents pending. Except errors by the spell checker. And that has its own patients.

  14. #11
    4 Star Lounger
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    The free version of Revo Uninstaller will only find 32-bit programs. Advanced Uninstaller Pro or Iobit Uninstaller may work better.

    Zig

  15. #12
    2 Star Lounger JC Zorkoff's Avatar
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    I got around this by rolling back to a previous version of Java.

    See my post under the "Other Browser" topic Here.

  16. #13
    2 Star Lounger
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    I've read of numerous problems with version 7 of Java, rolling back has helped some folks. In previous incarnations, I would run the install, but found that the old version was still in the Windows/System folder, actually both were there, I manually deleted the old one and things went back to normal. The uninstall java currently in use fixes that problem but does not do so with Chrome for some reason. PSI's online tool will show all you the places the old one still is and you can manually delete it, the new version should then work. At least it has for me now for some time though I rarely use Chrome, it annoys me when I find things that should have been uninstalled still there PSI's scanner is really helpful in ferreting out those "extra" spots where the old version is conflicting with the new.

  17. #14
    New Lounger
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    I have found a Java removal tool called JavaRa very helpful in fixing most Java issues. [URL="http://sourceforge.net/projects/javara/"]
    Uninstall all versions of Java then run this tool, then download and install the latest version of Java from Oracle. It has rarely failed to fix the problem.

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