How to downgrade JRE's version in Ubuntu?

When you downgrade, you'll probably want to keep it that way (having the update manager ignore the newer version), this list thread and the APT-HowTo seem to go through what's needed to do that.

Specifically check out How to keep a mixed system:

# apt-get install package=version

And How to keep specific versions of packages installed (complex), adding this to /etc/apt/preferences:

Package: <package>
Pin: <pin definition>
Pin-Priority: <pin's priority>

Update: To clarify some things: 1. Ubuntu 10.04 does not use Sun's JRE by default. Infact you need to enable repositories to install it.

As stated in my comments, just follow the above pattern:

apt-get install default-jre=1.6.0_17

Or for Sun's

apt-get install sun-java6-jre=1.6.0_17

But I doubt that will work, considering that the latest version of Sun's JRE is listed as 6.20.

Tim Lytle

Posted 2010-05-13T12:16:43.107

Reputation: 959

Thanks Tim Lyte for your time , i am trying it by downloading rpm packages externally . will let u know if it fails. – Jigar Joshi – 2010-05-13T12:53:36.143

RPMs are meant for ReadHat (Fedora/CentOS/Etc), not Ubuntu/Debian. Look for a .deb file if you're trying to downgrade with a downloaded package. – Tim Lytle – 2010-05-13T13:57:18.260

no it takes older version (newer version previously installed), in my case it is java can you specify how can i install java jre&jdk 1.6.0_17 by apt-get ? – Jigar Joshi – 2010-05-13T14:08:37.513

It really depends on what package you're installing. For Ubuntu's default (in 10.04) it would be apt-get install default-jre=1.6.0_17 Just follow the pattern given in my answer. – Tim Lytle – 2010-05-13T14:31:40.353

in ubuntu 10.4 default version of sun-java6-jre is 1.6.0_20 i want 1.6.0_17 – Jigar Joshi – 2010-05-13T14:47:16.953

let me re ask this question apecifically – Jigar Joshi – 2010-05-13T14:48:45.873

@abc, No, in 10.04 the default java isn't from sun, perhaps that's your problem. – Tim Lytle – 2010-05-13T19:09:32.550

yeah its openJdk, but when i fire apt-get install sun-java6-jre it installs the 1.6.0_20 update by default. i want to downgrade to 1.6.0_17 – Jigar Joshi – 2010-05-14T04:41:49.797

sudo apt-get install sun-java6-jre=1.6.0_17 Reading package lists... Done Building dependency tree
Reading state information... Done E: Version '1.6.0_17' for 'sun-java6-jre' was not found – Jigar Joshi – 2010-05-14T05:04:12.053

As noted in my updated answer, I don't think that version exists for Sun's JRE. – Tim Lytle – 2010-05-14T21:51:18.947

How to downgrade JRE's version in Ubuntu?

Answers