How do you install JRE and run it on Linux?

You can install JRE (Java Runtime Environment) on Linux by following these steps.

1. Open the terminal and type the following command to install the default version of JRE:

sudo apt-get update
sudo apt-get install default-jre

1. Before installing a specific JRE version, you can first check the available JRE versions.

sudo apt-cache search openjdk

Next, choose the version you want to install and use the following command to proceed with the installation (using OpenJDK 11 as an example):

sudo apt-get install openjdk-11-jre

1. After the installation is complete, you can use the following command to verify if the JRE has been successfully installed:

java -version

If you see the following output, it means that the JRE has been successfully installed.

openjdk version "11.0.11" 2021-04-20
OpenJDK Runtime Environment (build 11.0.11+9-Ubuntu-0ubuntu2.20.04)
OpenJDK 64-Bit Server VM (build 11.0.11+9-Ubuntu-0ubuntu2.20.04, mixed mode, sharing)

After installation, you can run Java applications written using JRE on Linux.