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java question

659 Views 22 Replies Latest reply: Feb 4, 2013 9:23 PM by MadMacs0 RSS
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mindyann Level 1 Level 1 (0 points)
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Feb 3, 2013 8:24 PM

Can I run Java 1.6 on my Mac with Lion installed? Everything I have read says that 1.7 is for Lion. The problem is that with the grading software my school district runs, Java 1.7 is not compatible. I am trying to get a friend's Macbook to run the grading program.  I know that my desktop Mac running Lion will work.  Where can I find which version of Java is installed on my computer so that I can mimic the same setup on his computer.  Thanks in advance.

  • Kappy Level 10 Level 10 (221,015 points)
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    Feb 3, 2013 8:27 PM (in response to mindyann)

    Open Terminal in the Utilities folder and enter at the prompt:

     

    java -version

     

    Press RETURN.

    iMac, OS X Mountain Lion (10.8.2), MPro, MBPs, MBs, iPods, iPads, ATV
  • MadMacs0 Level 4 Level 4 (3,320 points)
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    Feb 3, 2013 9:24 PM (in response to mindyann)

    Kappy's suggestion will only tell about one version version, probably Apple's Java 6. If you go to System Preferences and find a Java icon, then you have Java 7 installed. It is possible that you have both or neither installed.

  • MadMacs0 Level 4 Level 4 (3,320 points)
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    Feb 4, 2013 10:00 AM (in response to mindyann)

    mindyann wrote:

     

    I restarted and it wouldn't pick up the grading system.

    Open Java Preferences (found in /Applications/Utilities/)

    Java Preferences 1.6.0_39.png

    and make sure both of the checkboxes in the lower pane are checked.

     

    As I understand it, your grading system is application based and doesn't involve a browser plug-in, so it should not be necessary to check the box at the top of the window for that.

     

    The Network tab is the place to empty your cache with the "Delete Files..." button.

  • baltwo Level 9 Level 9 (59,150 points)
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    Feb 4, 2013 10:16 AM (in response to mindyann)
    27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.2), G4 450 MP w/Leopard, 9.2.2
  • MadMacs0 Level 4 Level 4 (3,320 points)
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    Feb 4, 2013 10:26 AM (in response to mindyann)

    mindyann wrote:

     

    I don't have a java preferences in the utilities folder.

    Sorry, I'll blame it on not having had my first cup of coffee yet. I forgot you said you were running Lion.

     

    Unfortunately Apple disabled Java 6 for Safari and has not announced plans to upgrade it for Lion / Mountain Lion users.

     

    About the only thing I can suggest is to use Firefox and agree to ignore the warning it posts each time you access a Java based web site. The 1.6.0_37 version of Java has at least 30 unpatched vulnerabilities, so it's important to only use it with trusted web sites.

     

    I read elsewhere that this has shut down access to all the banking web sites in Denmark for Lion and Mountain Lion users and that has prompted the government there to pressure Apple to do something about it.

     

    I would recommend giving them your own feedback at http://www.apple.com/feedback/macosx.html.

  • MadMacs0 Level 4 Level 4 (3,320 points)
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    Feb 4, 2013 10:30 AM (in response to baltwo)

    mindyann doesn't have Java 7 installed so that's not needed in her case.

  • baltwo Level 9 Level 9 (59,150 points)
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    Feb 4, 2013 10:47 AM (in response to MadMacs0)

    Sorry, but since she noted that the Java Preferences app was missing, I assumed she or her friend installed it. However, if that's missing and she wants to mimic her machine running Lion w/Java 7, then she should install the latest Java 7 update on her friend's machine: http://docs.oracle.com/javase/7/docs/webnotes/install/mac/mac-jre.html

    27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.2), G4 450 MP w/Leopard, 9.2.2
  • MadMacs0 Level 4 Level 4 (3,320 points)
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    Feb 4, 2013 10:59 AM (in response to baltwo)

    baltwo wrote:

     

    if...she wants to mimic her machine running Lion w/Java 7, then she should install the latest Java 7 update on her friend's machine:

    The grading software she needs to run off the school districts web site is not compatible with Java 7, so she wants to be able to run Java 6 in a browser from her Lion iMac.

  • baltwo Level 9 Level 9 (59,150 points)
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    Feb 4, 2013 11:16 AM (in response to MadMacs0)

    The problem is that with the grading software my school district runs, Java 1.7 is not compatible.…I know that my desktop Mac running Lion will work.  Where can I find which version of Java is installed on my computer so that I can mimic the same setup on his computer.

     

    And that's why I posted on how to reinstall/install Java 6, since that's what I assumed she was running.

    27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.2), G4 450 MP w/Leopard, 9.2.2
  • MadMacs0 Level 4 Level 4 (3,320 points)
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    Feb 4, 2013 11:26 AM (in response to baltwo)

    baltwo wrote:

     

    And that's why I posted on how to reinstall/install Java 6, since that's what I assumed she was running.

    Yes, she said that java -version told her she had some version of Java 6 (probably 1.6.0_37 if she has the October update) and had no Java in System Preferences.

     

    But I don't see anything in the reference you gave about reinstall/install Java 6, only reverting the plug-in after installing Java 7? If she never installed Java 7 then there shoud be no need to revert.

  • baltwo Level 9 Level 9 (59,150 points)
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    Feb 4, 2013 12:06 PM (in response to MadMacs0)

    I assumed that since both machines were running Lion, her friend installed Java 7. The only solution is to reinstall the latest Java 6 for Lion update and see if that fixes the issue.

    27" i7 iMac SL, Lion, OS X Mountain Lion (10.8.2), G4 450 MP w/Leopard, 9.2.2
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