Ubuntu :: Disable The OpenJDK Or Remove OpenJDK
Feb 1, 2011
OpenJDK has recently updated. Problem is that I am using the JDK from Sun/Oracle which I downloaded and installed along with other java tools and IDE's. I notice that openJDK is now the default JDK on the system.
java version "1.6.0_20"
OpenJDK Runtime Environment (IcedTea6 1.9.4) (6b20-1.9.4-0ubuntu1~10.04.1)
OpenJDK Server VM (build 19.0-b09, mixed mode)
Now my own java build is configured in $PATH but ignored, this is not good as I do a lot of java development. I would like to disable the OpenJDK or even remove it. I would also like to disable the update manager for this particular package and it's other add ons.
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Nov 4, 2010
how do I uninstall Java? Tried with Synaptic and apt-get remove, but uninstalling sun-java6 automatically adds default-jre (openjdk) and uninstalling openJdk automatically installs sun-java ... but I don't want ANY Java on my machine - am I missing something? Already thought I maybe have a package that requires SOME kind of Java, but how do I find out?
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Oct 21, 2010
Last nights upgrade of java-1.6.0-openjdk-1.6.0.0-43.1.8.2.fc13.i686 and java-1.6.0-openjdk-plugin-1.6.0.0-43.1.8.2.fc13.i686 prevent the loading of Ameritrades Command Center.Downgrading to version 1.6.0.0-37 fixes the problem. I'll post the bugzilla number as soon as I get the chance to file it.
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Mar 20, 2011
I have fedora 13 64bit box. I have installed latest Sun JDk. But when I do: java -version I still got OpenJDK version. So I completely removed OpendJDK. But now when I do: java -version I get even older GNU java 1.5 something libgcj. So I completely removed that too but it was asking to remove bunch of dependent apps like OpenOffice Writer etc. Even though I need the writer, I let it go because I do not want ever to see the face of any GNU java on my linux. So everything related to GNU java is removed. Luckily I am able to start Eclipse and it works fine and start normally (apparently using the installed Sun JDK which is what I want). But now when I do java -version I get bash: /usr/bin/java: No such file or directoy
Now what I need to do so that when I open any terminal window and enter java -version I should get Sun JDK version? Sun JDK is installed in /usr/java/jdk1.6.021. I also have symlinks: /usr/java/latest and /usr/java/defaults pointing to sun jdk.
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Jun 13, 2010
i want to use sun java but i am getting this error
Quote: sudo update-java-alternatives -s java-6-sun
Quote:
update-alternatives: error: no alternatives for xulrunner-1.9-javaplugin.so. update-alternatives: error: alternative /usr/lib/jvm/java-6-sun/jre/lib/i386/libnpjp2.so for mozilla-javaplugin.so not registered, not setting.
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Sep 8, 2011
I just installed F 15. I have a Java app that I use a lot that is buggy with OpenJDK 6, because OpenJDK 6 is buggy, and apparently it needs OpenJDK 7 to run smoothly. Is there an RPM for OpenJDK 7 somewhere? I haven't been able to find it if it exists.
I also need ffmepg but have been unable to find a RPM for it either I did try to build ffmepg form source but it wouldn't build because it was missing Git what ever that is, which in turn I couldn't find a package for. I'm trying to avoid going on a scavenger hunt to get this installed and that's why I'm looking for an RPM.
If OpenJDK7 and ffmepg do not have RPMs for F 15 what are my best options?
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May 4, 2010
After reading the sticky on 10.04 regarding java, I would like to know that if I install sun-java from Medibuntu, do I need to uninstall Openjdk and Icedtea? Can these programs coexist? Should I uninstall Openjdk first and then install sun-java? I think the absence of sun-java on my Dell is the root cause of the crashing that is ocurring when I try and access my AOL mail.
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Jul 23, 2010
I've been advised to "clear the java cache", and to do so under Windows, one would open the java control panel. Of course, I'm using OpenJDK, and not Java's java.
Can anyone tell me how I would clear the java cache?
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Nov 3, 2010
I am using Ubuntu 10.10 and currently have OpenJDK java 6 installed. I am trying to run a program called BioLayout Express3D which I am using for my genetics honours project however each time I launch it it loads but immediatelly crashes with the error
[Code]....
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Oct 18, 2010
How do I uninstall the OpenJDK from CentOS?
I have tried "rpm -qm" but I can't find this version. Is there another way to uninstall JDK?
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Oct 28, 2010
I have both the openjdk-6-jre and sun-java6-jre versions of java installed on my Ubuntu Maverick desktop, with the sun version setup as the default. I was trying to load the web page,URL..., an amateur radio software defined receiver. I can load the page on Firefox run on XP in a VirtualBox machine, but when loaded on Firefox on my Maverick desktop, I wasn't getting any sound with openjdk, so I installed sun's and set it as the default. When I run 'java -version' from the command line, it reports the following:Java(TM) SE Runtime Environment (build 1.6.0_22-b04)Java HotSpot(TM) Server VM (build 17.1-b03, mixed mode)but on firefox, when loading the above page, it reports 'java version test applet 1.6.0_20' on the page. How do I get sun's version to run? I need to get the sound to work.
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Mar 11, 2011
Im trying to change my OpenJDK to JDK from oracle. I have tried a lot of ways that I found on net, and I coudnt.
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May 14, 2010
I've installed the newly released OpenJDK which includes the updated NPPlugin that's compatible with Firefox 3.6. However the CPU usage is abysmal. I'm seeing 80-100% by the java component. How I installed it and removed the previous Sun Java workaround is listed here.
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Mar 28, 2011
My sig says 11.3, but I just did a new install to 11.4. I found a small problem with using openjdk 1.6.20 with one of my applications. I use Scottrader, proprietary Java application by Scottrade. It uses ports 80 and 443 for the data streams and I was not getting any data on 443 with openjdk. I stopped the firewall, just in case that was a problem, but it persisted. I solved the problem by installing Sun java 1.6.24, and running update-alternatives to use Sun java as the default. Data on ports 80 and 443 are running to the application now.
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Jun 24, 2010
i want to install kubuntu-restricted-extras but i prefer sun-java6 packages over openjdk... how can i exclude openjdk from installing when i install kubuntu-restricted-extras.
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Jul 30, 2010
The update manager told me there were several packages to update, and I as usually said 'OK'. Then, it told me that some packages could not be installed. I ran dpkg in a terminal window, and this is what it looks like:
> sudo dpkg --configure -a
Setting up openjdk-6-jre-headless (6b18-1.8-4ubuntu3) ...
update-alternatives: error: alternative link /usr/bin/java is already managed by java~.
dpkg: error processing openjdk-6-jre-headless (--configure):
subprocess installed post-installation script returned error exit status 2
dpkg: dependency problems prevent configuration of openjdk-6-jre:
openjdk-6-jre depends on openjdk-6-jre-headless (>= 6b18-1.8-4ubuntu3); however:
Package openjdk-6-jre-headless is not configured yet.
dpkg: error processing openjdk-6-jre (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of icedtea-6-jre-cacao:
icedtea-6-jre-cacao depends on openjdk-6-jre-headless (= 6b18-1.8-4ubuntu3); however:
Package openjdk-6-jre-headless is not configured yet.
dpkg: error processing icedtea-6-jre-cacao (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of icedtea6-plugin:
icedtea6-plugin depends on openjdk-6-jre (= 6b18-1.8-4ubuntu3); however:
Package openjdk-6-jre is not configured yet.
dpkg: error processing icedtea6-plugin (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
openjdk-6-jre-headless
openjdk-6-jre
icedtea-6-jre-cacao
icedtea6-plugin
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Aug 29, 2011
I have the following packages of openjdk and icedtea installed.
i openjdk-6-jre - OpenJDK Java runtime, using Hotspot JIT
i openjdk-6-jre-headless - OpenJDK Java runtime, using Hotspot JIT (headless)
i openjdk-6-jre-lib - OpenJDK Java runtime (architecture independent libraries)
i icedtea-6-jre-cacao - Alternative JVM for OpenJDK, using Cacao
i A icedtea-6-jre-jamvm - Alternative JVM for OpenJDK, using JamVM
Now I am not a developer or anything just a user. My use-case are two :-
a. Running java programs on the desktop
b. Running java in the web-browser.
I *think* both of them get installed by default. Openjdk via the default-jre virtual package while icedtea due to some of the openjdk headless packages.
~$ aptitude why openjdk-6-jre
i default-jre Depends openjdk-6-jre (>= 6b23~pre8-2~)
~$ aptitude why icedtea-6-jre-jamvm
i openjdk-6-jre-headless Recommends icedtea-6-jre-jamvm (= 6b23~pre8-2)
~$ aptitude why openjdk-6-jre-headless
i openjdk-6-jre-lib Depends openjdk-6-jre-headless (>= 6b17)
$ aptitude why openjdk-6-jre-lib
i openjdk-6-jre-headless Depends openjdk-6-jre-lib (>= 6b23~pre8-2)
Notice the circular dependency at the end. From what I read the headless packages are basically for those systems where a server is running which does not have have a monitor, in which case I wonder why its installed in my system? My actual issue is of having the java for iceweasel. I did search for having java plugins and did not find anything except for icedtea-plugin to run java on my browser.
Trying to install it through gave conflicts :-
$ sudo aptitude install icedtea-plugin
[sudo] password for shirish:
The following NEW packages will be installed:
icedtea-netx{a} icedtea-plugin xulrunner-1.9.1{ab}
0 packages upgraded, 3 newly installed, 0 to remove and 4 not upgraded.
Need to get 8,642 kB/9,103 kB of archives. After unpacking 26.5 MB will be used.
The following packages have unmet dependencies:
openjdk-6-jre-headless: Conflicts: icedtea-netx (< 1.1.1-2~) but 1.1-1 is to be installed.
xulrunner-1.9.1: Depends: libmozjs2d (= 1.9.1.16-6) but 1.9.1.16-9 is installed.
The following actions will resolve these dependencies:
Keep the following packages at their current version:
1) icedtea-netx [Not Installed]
2) icedtea-plugin [Not Installed]
3) xulrunner-1.9.1 [Not Installed]
Accept this solution? [Y/n/q/?] q
Abandoning all efforts to resolve these dependencies.
Abort.
I did see the other solutions but most of them recommend downgrading both the openjdk and icedtea packages to the ones in testing rather than in unstable.
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Sep 17, 2014
I'm running Debian Jessie 64bit, the X-window is xfce4, I found the 'OpenJDK Java 7 Policy Tool' entry is already under the Settings menu, it seems appeared after I customized jessie a little, that installing nvidia driver, virtualbox ose, adobe reader and adobe flash player. From console, I can check there is java, but no javac.For doing java programming, I don't know if the OpenJDK was complete installed or not, should I continue to use it or remove it to install Oracle JDK?
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Sep 27, 2009
I thought java was opensourced, yet the Cisco ASDM (which is java based) is completely unuseable when using openjava. When I use the version from java.com, everything works as expected, including the browser plugin.
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Nov 12, 2009
Much as I enjoy having openjdk available, some things just don't work with it. So for those things, I need to use the sun version of java. I currently have openjdk installed from F11 yum. I'd like to install the sun java rpm and be able to tell the alternatives(8) system to switch between the two as I need to. How to configure alternatives(8) to do that?
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Dec 16, 2009
Tell me how to compile and run java programs using openJDK on fedora 11
i have gcc installed
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Feb 18, 2010
Is the OpenJDK web plugin the only option for java web plugins? I uninstalled it to run the Sun JDK Update 18, but now I can't find another web plugin.
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Mar 13, 2010
I have compiled the OpenJDK with NPPlugin support for fedora 12. It works very well in Firefox 3.6. I would like to share it with you. Download the RPMs from the output of koji and run: #yum localinstall java-1.6.0-openjdk* It will upgrade your openjdk. The plugin can be used in Firefox 3.6 in both remi's rpm or F13's firefox,
[Code].....
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Aug 26, 2010
I'm trying to install Open Rocket : [URL]. I don't think I have java installed. I went to software center and tried to install "OpenJDK Java 6 runtime" and it says package dependencies cannot be resolved. I tried doing sudo apt-get install through terminal and it was dependent on a long list of things:
openjdk-6-jre
openjdk-6-jre-headless
tzdata-java
tzdata
I tried to sudo apt-get each one and it led me down the list like that to a dead end.
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Jan 22, 2010
see the released of Mozilla Firefox 3.6. However, it seems that Firefox 3.6 does not like current OpenJDK Java plugin installed by Fedora 12. (IT SUPPORTS NOW SEE SOLUTION BELOW) A little google turned out that in this release Firefox dropped the old Open Java Integration mechanism, which is currently being used by OpenJDK Java plugin. [Code] Now I have to manually install the JRE from Sun to get Java plugin in Firefox 3.6.
Is there any plan for OpenJDK to catch up with this change of Java plugin? I hope the Firefox 3.6 shipped with Fedora 13 could have OpenJDK Java plugin support.
Yes, OpenJDK did have plan for the new java plugin. Actually it arrived with IcedTea B17 (Alpha version, of course). However, the new plugin support is only enabled in Fedora 13 build config. Now our task is simple, upgrade the OpenJDK to Fedora 13 build in rawhide, like what we have done to Firefox.
[Code]....
Reboot your Firefox 3.6 and it's done. I have tested with Citrix java client and RuneScape. Citix works fine, but the RuneScape crashed with my Compiz. Switch off Compiz and the RuneScape works fine, too. It is not a big deal for me since I do not play RuneScape. So basically it WORKS.
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Jun 11, 2010
Last nights updates of: java-1.6.0-openjdk-1.6.0.0-39.b18.fc13.i686 and java-1.6.0-openjdk-plugin-1.6.0.0-39.b18.fc13.i686 no longer work with Ameritrade Command Center. I was really happy when OpenJDK got to a point where I didn't have to install Sun's Java, and it has been working great for quite a few months now, but today, when trying to bring up Command Center, it's telling me that there is a missing plugin, then points me to the Sun Java site. This is when using Firefox or Chrome. It may just be the plugin or the way it's positioned, so, hopefully this weekend I'll get time to investigate a little further. If not I'll downgrade to the previous version. <sigh> I really didn't want to install Sun's Java on my F13 boxes.
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May 3, 2011
I installed openjdk version of Java using yum what is the openjdk Home directory?
Is there a command to find it?
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Jul 10, 2010
I am using Kubuntu 10.04 with Firefox 3.6 from Mozilla's website and I use OpenJDK from the Ubuntu repsitories.I want to know how do I configure OpenJDK with the Firefox to view Java applets in the browser.
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Mar 20, 2011
I have installed latest Sun JDk. But when I do: java -version I still got OpenJDK version. So I completely removed OpenJDK. But now when I do:
java -version I get even older GNU java 1.5 something libgcj. So I completely removed that too but it was asking to remove bunch of dependent apps like OpenOffice.org Writer etc. Even though I need the writer, I let it go because I do not want ever to see the face of any GNU java on my linux. So everything related to GNU java is removed. Luckily I am able to start Eclipse and it works fine and start normally (apparently using the installed Sun JDK which is what I want). But now when I run
java -version I get bash: /usr/bin/java: No such file or directory Now what I need to do so that when I open any terminal window and enter java -version I should get Sun JDK version? Sun JDK is installed in /usr/java/jdk1.6.021. I also have symlinks: /usr/java/latest and /usr/java/defaults pointing to sun jdk.
As suggested in the answer, I tried the alternatives command but it did nothing. I type the --display, nothing is shown, and --config does nothing.
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May 31, 2010
I',m having trouble running the zotero openoffice integration plugin in F13 under the openjdk plugin.It's known top be not working as per The problem lies in some permissions as reported here -fedora-linux/However i want to know if there's any progress on it, since i dont have privilege to install it in my lab computer. Also i found this old bug reportwhich seems to have something done.If anypone has any idea please post, else i think i need to file a new bug report.EDIT: I'd be glad even if someone can guide me to write local policy (.java.policy) to enable the plugin
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