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Pattistoes
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Q: why does my computer keep saying I need to install Java?

I have an iMac, processor-3.06 GHz, intel core i3, 4 GB 1333MHz DDR3 just updated to El Capitan, and I continue to get a msg about installing Java.

 

I have installed Java, several times. But continue to get the msg.

 

Any ideas as to why this is happening?

iMac, OS X El Capitan (10.11.1), Java not updating

Posted on Oct 29, 2015 4:56 AM

by greg sahli,Solvedanswer
greg sahli greg sahli
Level 7 (25,395 points)
A:

There are two javas...

The current one from Oracle, and the legacy one from Apple. They locate their files in different places.

To stop the messages, install the legacy one from Apple:

Java for OS X 2015-001

Posted on Oct 29, 2015 5:02 AM

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Pattistoes

Q: why does my computer keep saying I need to install Java?

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  • Helpful answers

  • by Barney-15E,Helpful

    Barney-15E Barney-15E Oct 29, 2015 6:41 AM in response to Pattistoes
    Level 8 (49,784 points)
    Mac OS X
    Oct 29, 2015 6:41 AM in response to Pattistoes

    You have installed a program that either requires a specific version of Java or requires a Java Virtual Machine (JVM), or requires a 32-bit version of Java.

    When you go to Java.com, the only thing you are installing is a Java Runtime Environment (JRE) which supports plug-ins in the web browser. If the program needs to run java code that is on your computer, the plug-in is insufficient.

     

    The legacy Java 6 released by Apple years ago will often solve all of the above issues as it would be the version the software was hard-coded to use, has a 32-bit version, and includes both the JVM and JRE.

    https://support.apple.com/kb/DL1572?locale=en_US

     

    If you want to use a more recent version of Java, then you can try downloading the Java Development Kit from the Oracle website (search for Java SE JDK).

    However, if the program was coded poorly, it will only work with Apple's Java 6.

  • by greg sahli,Solvedanswer

    greg sahli greg sahli Oct 29, 2015 5:02 AM in response to Pattistoes
    Level 7 (25,395 points)
    Oct 29, 2015 5:02 AM in response to Pattistoes

    There are two javas...

    The current one from Oracle, and the legacy one from Apple. They locate their files in different places.

    To stop the messages, install the legacy one from Apple:

    Java for OS X 2015-001

  • by penavasal,

    penavasal penavasal Dec 1, 2015 3:57 AM in response to greg sahli
    Level 1 (4 points)
    Dec 1, 2015 3:57 AM in response to greg sahli

    What happens if I have installed both? When I try to run Java Applets in Firefox a message appear saying that I don't have Java installed or something is blocking Java.

  • by Barney-15E,

    Barney-15E Barney-15E Dec 1, 2015 4:23 AM in response to penavasal
    Level 8 (49,784 points)
    Mac OS X
    Dec 1, 2015 4:23 AM in response to penavasal

    penavasal wrote:

     

    What happens if I have installed both? When I try to run Java Applets in Firefox a message appear saying that I don't have Java installed or something is blocking Java.

    You can have multiple versions of Java installed. A well-written program will determine which versions you have loaded and choose the most appropriate version or your preferred version. The ones that keep asking for the Legacy Java 6 weren't well-written.

  • by penavasal,

    penavasal penavasal Dec 1, 2015 4:32 AM in response to Barney-15E
    Level 1 (4 points)
    Dec 1, 2015 4:32 AM in response to Barney-15E

    So, this is not a problem of the Java version, because the applet would recognize which one to work with. But, why this applet is not working and telling me that I don't have Java installed?

  • by Barney-15E,

    Barney-15E Barney-15E Dec 1, 2015 5:09 AM in response to penavasal
    Level 8 (49,784 points)
    Mac OS X
    Dec 1, 2015 5:09 AM in response to penavasal

    penavasal wrote:

     

    So, this is not a problem of the Java version, because the applet would recognize which one to work with. But, why this applet is not working and telling me that I don't have Java installed?

    I don't use Firefox, so I don't know how it looks for the Applet or if it uses the standard plug-ins folder.

    Do you have this file, /Library/Internet Plug-Ins/JavaAppletPlugin.plugin

  • by penavasal,

    penavasal penavasal Dec 1, 2015 6:25 AM in response to Barney-15E
    Level 1 (4 points)
    Dec 1, 2015 6:25 AM in response to Barney-15E

    I use firefox because I find this problem when I use Safari:

     

    Error: Error calling method on NPObject.

  • by Barney-15E,

    Barney-15E Barney-15E Dec 1, 2015 3:55 PM in response to penavasal
    Level 8 (49,784 points)
    Mac OS X
    Dec 1, 2015 3:55 PM in response to penavasal

    penavasal wrote:

     

    I use firefox because I find this problem when I use Safari:

     

    Error: Error calling method on NPObject.

    I have no idea what that means, but I've never seen it. Perhaps you have more problems with interfering software than just Java.

  • by BobTheFisherman,

    BobTheFisherman BobTheFisherman Dec 1, 2015 4:02 PM in response to penavasal
    Level 6 (15,269 points)
    Dec 1, 2015 4:02 PM in response to penavasal

    penavasal wrote:

     

    What happens if I have installed both? When I try to run Java Applets in Firefox a message appear saying that I don't have Java installed or something is blocking Java.

    Are you sure it is complaining about java and not javascript? Typically web pages include javascript code and if javascript is not enabled in your browser you may get an error when displaying the page.

  • by penavasal,

    penavasal penavasal Dec 1, 2015 11:41 PM in response to BobTheFisherman
    Level 1 (4 points)
    Dec 1, 2015 11:41 PM in response to BobTheFisherman

    When I try to use the website on Firefox it says that I don't have Java installed, but I recognize that I don't know if this is a Javascript or Java problem. If it was Javascript, what do you propose to do? Thanks

  • by BobTheFisherman,

    BobTheFisherman BobTheFisherman Dec 2, 2015 8:18 AM in response to penavasal
    Level 6 (15,269 points)
    Dec 2, 2015 8:18 AM in response to penavasal

    From: http://activatejavascript.org/en/instructions/firefox

    Firefox

    Follow these instructions to activate and enable JavaScript in Firefox.

    PC & MAC

    1. Open a new Firefox browser window or tab.
    2. Copy the following then paste it into the Firefox address bar: about:config
    3. Hit the Enter key.
    4. On the following page, click the button: "I'll be careful, I promise!"
    5. Find the javascript.enabled row under the Preference Name heading.
    6. Double-click anywhere within the javascript.enabled row to toggle the value from "False" to "True".
    7. Finally, refresh your browser.

  • by David Beach2,

    David Beach2 David Beach2 Jun 18, 2016 11:26 AM in response to Pattistoes
    Level 1 (4 points)
    Jun 18, 2016 11:26 AM in response to Pattistoes

    This may be an old thread but I seemed to develop the problem recently on my MacBook Pro running El Capitan 10.11.5. I usually use Safari (9.1.1) and the issue was driving me nuts.

    Installing the "old" Apple Java did not work. Installing the Java SDK from Oracle eliminated the annoying message.

    I'm not expert enough to know why this fixed things - but it seems to have done so. Let's hope it sticks.....

     

    DB