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Where do I find the JDK install to uninstall? @terdon had explained using an rpm type download so it would be easier to uninstall, but I cannot find it.

4 Answers 4

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What's that packages name?

When you don't know the name of a specific RPM to uninstall you can search for it like so using the command rpm.

$ rpm -aq | grep -i jdk
java-1.7.0-openjdk-devel-1.7.0.60-2.4.4.0.fc19.x86_64
jdk-1.7.0_45-fcs.x86_64
java-1.7.0-openjdk-1.7.0.60-2.4.4.0.fc19.x86_64

Based on the above output I have 2 versions of Java installed. The official Oracler version, jdk-1.7.0_45 and the IceTea version aka. Open JDK, java-1.7.0-openjdk-1.7.0.60-2.4.4.0.

Uninstalling

To uninstall the official version of Java (JDK) you could use the following commands, yum or rpm:

yum

$ sudo yum remove jdk
[sudo] password for saml: 
Loaded plugins: auto-update-debuginfo, changelog, langpacks, refresh-packagekit
Resolving Dependencies
--> Running transaction check
---> Package jdk.x86_64 2000:1.7.0_45-fcs will be erased
--> Finished Dependency Resolution

Dependencies Resolved

=====================================================================================================================
 Package              Arch                    Version                               Repository                  Size
=====================================================================================================================
Removing:
 jdk                  x86_64                  2000:1.7.0_45-fcs                     installed                  193 M

Transaction Summary
=====================================================================================================================
Remove  1 Package

Installed size: 193 M
...

rpm

$ sudo rpm -e jdk

I would recommend always trying to use yum if you can, it does dependency checks that rpm does not.

2
  • I can't wget download.oracle.com/otn-pub/java/jdk/7u51-b13/…
    – cea
    Jan 23, 2014 at 4:30
  • Yes you have to go in through their website and download the files via your browser. Then use scp to copy them to other servers that are headless.
    – slm
    Jan 23, 2014 at 4:31
2

Search pre-installed JAVA:

$ rpm -qa | grep java
javapackages-tools-3.4.1-11.el7.noarch
java-1.8.0-openjdk-headless-1.8.0.151-5.b12.el7_4.x86_64

Remove using following command:

rpm -e java-1.8.0-openjdk-headless-1.8.0.151-5.b12.el7_4.x86_64
rpm -e javapackages-tools-3.4.1-11.el7.noarch
0

yum remove java

It is working for me

1
  • 1
    Removing "java" is broader than removing a single "JDK"...
    – Jeff Schaller
    Apr 20, 2018 at 15:04
-1

-> rpm -qa | grep java java-1.8.0-openjdk-1.8.0.312.b02-0.1.ea.el8.x86_64 tzdata-java-2021b-1.el8.noarch javapackages-filesystem-5.3.0-1.module_el8.0.0+11+5b8c10bd.noarch java-1.8.0-openjdk-headless-1.8.0.312.b02-0.1.ea.el8.x86_64

-> sudo yum remove jna-4.5.1-5.el8.x86_64 java-1.8.0-openjdk-headless-1:1.8.0.312.b02-0.1.ea.el8.x86_64

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