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.
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.
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Yes you have to go in through their website and download the files via your browser. Then use
scpto copy them to other servers that are headless. – slm♦ Jan 23 '14 at 4:31
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
yum remove java
It is working for me
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