Chapter 4. Updating Red Hat build of OpenJDK 11 on RHEL

Procedure

1. Check the current Red Hat build of OpenJDK version:

   $ sudo yum list installed "java*"

   A list of installed Red Hat build of OpenJDK packages displays.

   Installed Packages
   
   java-1.8.0-openjdk.x86_64   1:1.8.0.322.b06-2.el8_5    @rhel-8-for-x86_64-appstream-rpms
   java-11-openjdk.x86_64    1:11.0.14.0.9-2.el8_5    @rhel-8-for-x86_64-appstream-rpms
   java-17-openjdk.x86_64    1:17.0.2.0.8-4.el8_5    @rhel-8-for-x86_64-appstream-rpms

2. Update a specific package. For example:

   $ sudo yum update java-11-openjdk

3. Verify that the update worked by checking the current Red Hat build of OpenJDK versions:

   $ java -version
   
   openjdk version "11.0.14" 2022-01-18 LTS
   OpenJDK Runtime Environment 18.9 (build 11.0.14+9-LTS)
   OpenJDK 64-Bit Server VM 18.9 (build 11.0.14+9-LTS, mixed mode, sharing)

   Note

   If the output from the previous command shows that you have a different major version of Red Hat build of OpenJDK checked out on your system, you can enter the following command in your CLI to switch your system to use Red Hat build of OpenJDK 11:

   $ sudo update-alternatives --config 'java'

Procedure

1. Remove the existing symbolic link of the generic path to your JDK or JRE.

   For example:

   $ unlink ~/jdks/java-11

2. Install the latest version of the JDK or JRE in your installation location.