java uninstall linux

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uninstalling java on a linux system can vary slightly depending on the distribution you are using (e.g., ubuntu, centos, fedora, etc.) and how java was installed (via package manager, tarball, etc.). below, i’ll provide a general tutorial on how to uninstall java from a linux system using common methods.

### uninstalling java on linux

#### step 1: check installed java versions

before uninstalling java, it's a good idea to check which versions are currently installed. open a terminal and run:
you can also check for installed java packages using:
or for rpm-based systems:
#### step 2: uninstall java

depending on how java was installed, you can follow different methods.

##### method 1: using apt (debian/ubuntu)

if you installed java using the apt package manager (common in debian-based distributions like ubuntu), you can uninstall it using:
or, if you installed a specific version, for example, openjdk 11:
to remove any unused packages, you can run:
##### method 2: using yum or dnf (centos/fedora)

for rpm-based distributions like centos or fedora, you can use yum or dnf. to uninstall openjdk, run:

for centos:
for fedora:
##### method 3: manual uninstallation

if you installed java manually (e.g., from a tarball), you will need to remove the installation directory. for example, if you installed java in `/opt`:
make sure to replace `version` with the actual version number you have installed.

#### step 3: verify uninstallation

after uninstalling java, you can verify that it has been removed by running:
if java is uninstalled successfully, you should see a message indicating that the command is not found or that java is not installed.

### additional notes

- if you have multiple versions of java installed, you may need to specify which version to uninstall.
- always ensure that you have necessary backups or that you are aware of what dependencies may break after uninstalling java.
- if you need to reinstall java, you can do so usin ...

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