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As a programmer I use java for learning to code in Netbeans. I installed Sun java 6 long time ago over openJDK that came with my ubuntu just cause it seemed more responsive...

Now that oracle left the repos I wanted something easy to handle to install and uninstall, so I want to Remove completely sun java 6 from my computer and set as default OPENjdk....and openjre.

I already have installed OpenJDK and OPENjre...but not marked as default.

Besides I want to clean Sun java from here, dont wanna get messy ^^.

Running ubuntu 11.10

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possible duplicate of How to revert back to OpenJDK? –  Jorge Castro Mar 3 '12 at 15:05
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2 Answers

In terminal try the following commands:

$ sudo apt-get purge sun-java6-jre:amd64 sun-java6-jre:i386
$ sudo apt-get install openjdk-6-jre
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gives me a virtual packages like sun-java6-jre cannot be removed –  Tom Oct 16 '12 at 10:44
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Not quite sure what the package names are (investigate using Synaptic), but something along the lines of:

apt-get purge sun-java6-jre
apt-get install openjdk-6-jre

should do the trick. apt should take care of all the configurating and resetting the default java to openjdk.

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getting this on both commands:sudo apt-get purge sun-java6-jre Reading package lists... Done Building dependency tree Reading state information... Done Virtual packages like 'sun-java6-jre' can't be removed ...tried already that earlier but no luck :/... –  Adel Ramadan Feb 9 '12 at 9:13
    
sun-java6-jre depends: sun-java6-bin, suggests: sun-java6-fonts, sun-java6-plugin. Have you tried removing those separately? –  Li-aung Yip Feb 9 '12 at 12:00
    
No luck gettint this on "bin" and "plugin": "Unable to locate package" and in "fonts": unable to remove package. What I really dont get is this. When I go to check Java version says I got Java 6 23 and offers me to upgrade to version 6 30. But I have OPENJDK 7 and OPENJDK 6 installed...if I remove those I ahve to say goodbay to Jdownloader, so Im guessing I have OpenJDK installed but SUNJAVA is default on my system..(At least in firefox or network applets)... really dont know what to do wanna delete SUNJAVA!!!! damn XD –  Adel Ramadan Feb 10 '12 at 16:17
    
Just to check, what do you get when you run java -version? I get ` lws@helios:~$ java -version java version "1.6.0_30" Java(TM) SE Runtime Environment (build 1.6.0_30-b12) Java HotSpot(TM) 64-Bit Server VM (build 20.5-b03, mixed mode)` –  Li-aung Yip Feb 10 '12 at 19:32
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