To run Pentaho Data Integration on Ubuntu, Java 8 is required. Higher versions of Java like 9 or 11 will cause this error. “Endorsed standards and standalone APIs in modular form will be supported via the concept of upgradeable modules.” To install Java 8, open your terminal and type in these commands at the shell prompt: “sudo apt update” and “sudo apt install openjdk-8-jdk” The terminal will ask you to confirm your download, type “y” to confirm. To confirm you have Java installed, type “java -version” in your terminal. You should see something like this:
