Installing Java

On the Caplin Platform, a Java runtime environment (JRE) is used to run Java-based DataSources (integration adapters) and to run Java modules in C-based DataSources. This page provides an overview of the steps required to install a Caplin Platform compatible JRE on Red Hat Enterprise Linux.

JRE compatibility

For detailed information JRE compatibility, see Caplin Platform System Requirements.

Installing Java on Red Hat Enterprise Linux

To install Red Hat OpenJDK 17 (available in RHEL 8 and 9), follow the steps below:

  1. Install Red Hat OpenJDK 17:

    $ sudo yum install java-17-openjdk-devel

  2. In the home directory of the user account used to run Caplin Platform components, edit the file ~/.bash_profile and set the JAVA_HOME variable to the value below:

    export JAVA_HOME=/etc/alternatives/java_sdk_17

  3. Run the command below and select OpenJDK 17 as the JDK that provides the javac command on the command line:

    $ sudo alternatives --config javac

  4. Run the command below and select OpenJDK 17 as the JRE that provides the java command on the command line:

    $ sudo alternatives --config java