Java, or Not  

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  1. Posts : 207
    W10 Pro v22H2 64-bit
    Thread Starter
       #11

    Ghot, thanks for responding.

    Since posting, I've done a little research. I've seen references to some programs also uninstalling plugins, etc. Will most or all do that? Will Revo do that, meaning for Java Toolkit? Is there no way to do this without re-installing? I could restore a system image if necessary to get it back.
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  2. Posts : 22,649
    Win 10 Home ♦♦♦19045.4046 (x64) [22H2]
       #12

    vanp said:
    Ghot, thanks for responding.

    Since posting, I've done a little research. I've seen references to some programs also uninstalling plugins, etc. Will most or all do that? Will Revo do that, meaning for Java Toolkit? Is there no way to do this without re-installing? I could restore a system image if necessary to get it back.


    For one of these uber uninstallers to work...the whole program has to be there for it to work on.
    I pretty much use Revo Uninstaller to uninstall anything. It'll even uninstall MS apps.

    First it uninstalls, then give you the option to scan for registry entries, and lastly, if necessary, gives you the option to remove general leftovers.
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  3. Posts : 2,684
    Windows 10
       #13

    Try and ascertain what the application is that uses Java. Sometimes it may insist on a particular version.
    I have one application using Java and it is happy with the latest version, so no worries.

    As for uninstalling Java I prefer to go to the main man.

    Java Uninstall Tool

    For me Revo is a disaster it has caused damage & much wasted time in the past, so I never use it.
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  4. Posts : 207
    W10 Pro v22H2 64-bit
    Thread Starter
       #14

    Thanks, Ghot, I'll take that under advisement.

    Helmut, I did say in my OP I had used the Java uninstall tool after realizing everything wasn't gone.

    Guys, if I restore Java, should I use the Java uninstall tool or use a separate uninstall product?

    Thanks again.

    EDIT: Helmut, I forgot to say that I don't know that I need Java; it's just on my machine--don't know that I did anything to put it there. If it turns out that I need it I guess I can always re-install it.
    Last edited by vanp; 15 Mar 2021 at 09:47.
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  5. Posts : 1,746
    Windows 10 Pro x64 22H2
       #15

    @vanp

    If you want to know more, Java is the same thing as Microsoft's .NET framework:
    https://dotnet.microsoft.com/learn/d...what-is-dotnet

    You have surely seen .NET components on your PC, in fact these are part of Windows.

    Java or .NET is "managed runtime environment" ( MORE INFO HERE ), which means programs that depend on them do not communicate to hardware as directly like other programs, instead they communicate to runtime environment which in turn forwards commands to hardware.

    Therefore lack of runtime environment (Java or .NET) would cause such programs to fail, they wouldn't even start.
    Program that depends on Java cannot make use of .NET to function or vice versa.

    One slight and relevant difference between Java and .NET is that Java is today mostly used by web apps, (in browser ex. browser games) but it's so rare and unpopular almost nobody use it anymore.

    If you ever come to such website it's not a mistake to close the website instead of installing Java due to many known security issues.

    So to answer your question, do you need Java?
    No, unless you really want to run Java dependent program or visit Java depended website, I personally did not come to such requirement for over several years, I don't even remember any more.
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  6. Posts : 207
    W10 Pro v22H2 64-bit
    Thread Starter
       #16

    Thanks, zebal, I'll look at your links when I have more time. Will an uninstall program get rid of the Java Toolkit?
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  7. Posts : 1,746
    Windows 10 Pro x64 22H2
       #17

    vanp said:
    Will an uninstall program get rid of the Java Toolkit?
    Other members already gave you good answer to this and that will surely work if you want to make sure to get rid of remnants (registry keys, files and folders)

    Uninstalling Java by simply going to:
    System -> Apps and then removing it there will get rid of Java.

    --------------

    IF you want to manually get rid of remnants (which pose no threat other than wasting small amount of disk space) then:
    1. First remove Java related folders from:
    - C:\Program Files
    - C:\Program Files (x86)
    - C:\ProgramData
    - C:\Users\YOUR_USERNAME\appdata\...\
    2. To get rid of Java remnants in your browser, reset it factory defaults (will get rid of your personal preferences, so make sure to export bookmarks and note down settings)
    3. Run disk cleanup (cleanmgr.exe) for your account as well as Administrator to clean up leftover temporary items and recycle bin
    3. Open up registry as Administrator (regedit.exe) and use CTRL + F followed by repeated F3 to find java keys.
    Make sure to delete only keys and values from registry that you 100% are sure are leftover from Java installation.
    Strongly recommended to back up registry before doing any changes:
    https://support.microsoft.com/en-us/...9-d428a2ab0692
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  8. Posts : 207
    W10 Pro v22H2 64-bit
    Thread Starter
       #18

    I restored a system image, which put Java back on my machine. Then I ran the official Java uninstall tool. As far as I can tell, it didn't do any more than uninstalling using the Control Panel Programs and Features uninstall process. The Java folder still appears in the Start Menu (I now know I can delete this whole thing easily). And the Toolkit v7 is still there.

    So, what do I have to do to get rid of Toolkit?

    zebal, you mentioned 'System->Apps.' I assume you meant Settings>Apps. I didn't think after I restored the system image to go there and see if Java is listed, but even if it was, I doubt uninstalling from there would have produced different results. At any rate, it's not listed now. And thanks for all the steps you recommended. If necessary when this is (almost) over, I'll check into them and see if there's something there. But I assume an uninstaller should take care of most of that kind of thing.

    So, do I have to choose an uninstaller, restore the system image again, and uninstall using the uninstall program? I can tinker with at least some remnants and delete them. Again, my main concern at this point is getting rid of Toolkit.

    Thanks.

    - - - Updated - - -

    After my last post I decided to search the web on the deletion of the toolkit.

    It's as simple as deleting the file 'npDeployJava1.dll' from C:>Windows>System32. Oh, the joy!

    I'll entertain any final thoughts, but unless something unexpected happens, the problem has been solved.

    Thanks to all.
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