Using apt install -y jdk8 docker: A Detailed Multi-Dimensional Guide

Installing Java Development Kit (JDK) and Docker on your system is a crucial step for any developer looking to build and run applications efficiently. In this guide, I’ll walk you through the process of installing JDK 8 and Docker using the apt install -y command. Let’s dive in!

Understanding apt install -y

The apt install -y command is a powerful tool in the Debian-based Linux distributions, such as Ubuntu. It is used to install packages from the repositories. The -y flag automatically answers ‘yes’ to all prompts, making the installation process faster and more straightforward.

Prerequisites

Before you begin, ensure that your system meets the following prerequisites:

Updating the package lists

Before installing JDK 8 and Docker, it’s essential to update your package lists to ensure you have the latest information about available packages.

sudo apt update

Installing JDK 8

Now, let’s install JDK 8 using the apt install -y command.

sudo apt install -y openjdk-8-jdk

This command will download and install the OpenJDK 8 JDK package. Once the installation is complete, you can verify the installation by running the following command:

java -version

This command should display the version of Java installed on your system. If you see the output for OpenJDK 8, you have successfully installed JDK 8.

Installing Docker

Next, let’s install Docker on your system. Docker is a platform for developing, shipping, and running applications. It allows you to separate your applications from your infrastructure so you can deliver software quickly.

First, add the Docker repository to your system:

sudo apt install -y apt-transport-https ca-certificates curl gnupg2 software-properties-common

Then, add Docker’s GPG key:

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

After adding the GPG key, set up the stable repository:

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

Finally, install Docker CE (Community Edition) using the apt install -y command:

sudo apt install -y docker-ce

Once the installation is complete, you can verify that Docker is installed by running the following command:

sudo docker --version

This command should display the version of Docker installed on your system. If you see the output, you have successfully installed Docker.

Verifying the installation

Now that you have installed JDK 8 and Docker, let’s verify that both are working correctly.

For JDK 8, run the following command:

java -version

This command should display the version of Java installed on your system. If you see the output for OpenJDK 8, you have successfully installed JDK 8.

For Docker, run the following command:

sudo docker run hello-world

This command will download and