<aside> 🕒 11/06/2022 by R3GEN - 4 minutes to read

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This will guide you through a quick installation of the Java 17 runtime that is used for modpacks in 1.18, such as:

Start by opening Adoptium’s website in a browser of your choice **https://adoptium.net** then follow the set of instructions below. Adoptium provides Java programs, which is what the FTB App uses internally for launching and installing modpacks (called bundled Java).

  1. Click the “Release archive” on the front page:

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  2. In the drop down list, make sure “17” is selected:

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  3. Scroll down until you see the “jdk-17.0.2+8”:

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  4. Click the “Binary” JRE (Java Runtime Environment) to download it for your system. For example if you are using Windows 10 or Windows 11 Home, you will be clicking the one for “Windows x64”:

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  5. In your downloads folder, you will now have the Java program in the form of a zip file:

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  6. You now need to open the folder of the FTB App where that program is normally installed.

Windows 🪟: Press Windows + R to open the execute prompt. Paste the text %localappdata%\\.ftba\\bin\\runtime in the box and then press “Ok”. This will open the view in a new File Explorer.

Linux 🐧: Navigate from your home folder into ~/.ftba/runtime and change directory into it.

MacOS 🍎: Open a new terminal. Paste the text open ~/Library/Application\\ Support/.ftba/bin into it and press Enter. The File Explorer will open for you.

The folder should look a bit like this for now:

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  1. Take the zip file from your Downloads from earlier, and simply move it to that “runtime” folder from the previous step:

    You can drag and drop a file in Windows across two windows to move it

    You can drag and drop a file in Windows across two windows to move it