When I tried to install Java package that is required for Jenkins install I see the following error and there is no clue how to get unblocked from this error. OS on the droplet is Ubuntu 18.04.
$ sudo apt install default-jre Reading package lists... Done Building dependency tree Reading state information... Done **E: Unable to locate package default-jre** $ java --version Command 'java' not found, but can be installed with: sudo apt install openjdk-11-jre-headless # version 11.0.7+10-2ubuntu2~19.10, or sudo apt install default-jre # version 2:1.11-72 sudo apt install openjdk-13-jre-headless # version 13+33-1 sudo apt install openjdk-14-jre-headless # version 14~18-1 sudo apt install openjdk-8-jre-headless # version 8u252-b09-1~19.10 $ sudo apt install openjdk-11-jre-headless Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package openjdk-11-jre-headless $ $ sudo apt install openjdk-14-jre-headless Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package openjdk-14-jre-headless $ $ sudo apt openjdk-8-jre-headless E: Invalid operation openjdk-8-jre-headless $
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