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Asked: 2024-09-25T00:07:38+05:30 In:

What are the steps to install JDK 8 on Ubuntu 16?

So, I’ve been diving into Java development recently, and I realized I need to install JDK 8 on my Ubuntu 16 machine. The thing is, I’m a bit rusty with Linux commands and the overall installation process. I remember back in the day when I used to install software like it was nothing, but now I feel like I’m staring at an empty terminal wondering where to start.

First of all, I’ve heard there are a couple of different ways to install JDK on Ubuntu: using the terminal with APT package manager or downloading it directly from Oracle’s website. Honestly, I’ve never been a huge fan of downloading software manually because it feels like I’m opening a Pandora’s box of dependencies and configuration issues. So, I’m leaning more towards the APT method, but I’m not entirely sure if that’s the best approach for JDK 8 specifically.

Could someone help me with the step-by-step process? I mean, the things I might need to do before I even run the installation – like adding repositories or updating my package list – all these little details that I might forget are super crucial, right? And then there’s the whole setting up the environment variables afterward. Do I need to configure those right after the installation, or can I just dive straight into coding once the JDK is installed?

Plus, I keep seeing mentions of different JDK versions. Is it possible that installing JDK 8 might mess with any current versions I have, or will it coexist peacefully?

Also, if I run into any hiccups during the installation process, are there common errors I should be on the lookout for? I remember facing some strange issues when installing other software before.

I’d really appreciate any tips or even a quick rundown of what commands to run in the terminal. I just want to ensure I’m on the right path so I can hit the ground running with my Java projects! Thanks!

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    2 Answers


    1. To install JDK 8 on your Ubuntu 16 machine using the APT package manager, you’ll want to follow these steps. First, open the terminal and ensure your package list is updated. You can do this by running the command: sudo apt update. After updating, you can install the JDK 8 package by executing: sudo apt install openjdk-8-jdk. This command installs the open-source version of JDK 8, which is sufficient for most development tasks. If you require Oracle’s JDK for specific reasons, you can add a PPA (Personal Package Archive) that maintains Oracle JDK, but generally, using the default repositories through APT is the simplest and most trouble-free method. Once the installation is complete, you can check if JDK 8 is installed correctly by running: java -version.

      Regarding environment variables, setting JAVA_HOME is typically necessary for various Java applications. You can add this variable by editing your ~/.bashrc file. You would append the line: export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64 and then run source ~/.bashrc to apply the changes. As for coexistence with other JDK versions, Ubuntu allows multiple JDKs to coexist without issues. You can choose which version to use with the command: sudo update-alternatives --config java, which will let you switch between different installed JDKs. Common errors might include not having the correct PPA added if you’re installing Oracle JDK, or issues with conflicting software if some paths were not correctly set during installation. Always check the installation logs for hints on what might be going wrong.




    2. Installing JDK 8 on Ubuntu 16

      Installing JDK 8 on Ubuntu 16: A Rookie’s Guide

      If you’re looking to install JDK 8 on your Ubuntu 16 machine, you’re in the right place! It can feel a bit daunting, especially if you’re not super comfortable with terminal commands, but we’ll break it down step by step.

      Using APT to Install JDK 8

      Using the APT package manager is definitely the way to go! It helps manage dependencies and makes sure everything runs smoothly. Here’s how to do it:

      1. Open your terminal. You can usually find it in your applications or by pressing Ctrl + Alt + T.
      2. Update your package list. Before installing anything, it’s a good idea to update. Type:

        sudo apt update
      3. Install JDK 8. Now you can install JDK 8 with this command:

        sudo apt install openjdk-8-jdk

      Check Your Installation

      After the installation is complete, you can verify it by running:

      java -version

      You should see information about JDK 8.

      Setting Up Environment Variables

      You might also want to set up some environment variables. This step isn’t necessary for basic usage, but if you want to set the JAVA_HOME variable, here’s how:

      1. Open your ~/.bashrc file in a text editor: 
        nano ~/.bashrc
      2. Scroll to the bottom and add the following line: 
        export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
      3. Save and exit the file (in nano, you can do this with Ctrl + X, then Y, and Enter).
      4. Activate the changes by running: 
        source ~/.bashrc

      Version Conflicts

      You can have multiple versions of JDK installed on your machine. To manage versions, you can use:

      sudo update-alternatives --config java

      This will let you select which version to use as the default.

      Common Installation Issues

      If something goes wrong, common issues might include:

      • Network issues when trying to download packages.
      • Package dependency problems. If you see errors, try running sudo apt --fix-broken install to resolve them.

      Wrap-Up

      Once you’ve got everything installed, you should be ready to code without any hiccups! If you run into any issues, don’t hesitate to look up solutions or ask for help. Good luck with your Java projects!


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