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I have updated to 12.04 LTS from 10.04 LTS because I could not get java to test as working on http://www.java.com/en/download/installed.jsp

... I still can't get java working.

  • I have installed icedtea and the openjdk through the software center.
  • I have run 'apt-get update; apt-get upgrade'.
  • I have tried Chrome and Firefox.
  • I have read all over the Internet and this problem keeps coming up. For example: icedtea-7-plugin non-functional in Ubuntu 13.04 I have followed the instructions there and elsewhere and java still fails to validate and run for me and, apparently, a lot of people.

I am out of ideas and java still does not validate and run for me.

Any help would most definitely be appreciated.

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Well, this test seems not to work for me either. I get a screen like this:

Screenshot: We are unable to verify if Java is currently installed and enabled in your browser

but all other Java web applications are working fine. So maybe the test is broken, not the IcedTea. Try this test instead: Java Tester.

  • I started this journey on 10.04 LTS and both javatester.org (your link) and the oracle java test (my link at top) did not work. I read around and there seems to have been some trouble with Java on 10.04 LTS so I upgraded to 12.04 LTS. Now my UI is laggy and I have to relearn where everything is (command-s anyone?) but installing icedtea and disabling all my browser security allows your java test link to work. Thank you! – rfreytag Oct 23 '13 at 16:00
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Follow the instructions on the Easy Linux Tips Project Installing Java In Ubuntu

  • The link you provided is FANTASTIC. It drills right down and tells you ever step (more than I need actually). But when stuck this link has the goods even if one is having brain failure. I just don't have enough reputation to upvote you. And, sadly, the other answer is the one that showed me that I was actually installed correctly but the Oracle Java test is broken so I have to check that one as the answer for the special case I was seeing with 12.04 LTS. Thank you! – rfreytag Oct 23 '13 at 15:56

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