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Install/Verify Java (Windows)

You will need Java installed if you want to:

  • Install a Fabric server. Windows and Linux guides available
  • Run Minecraft in MultiMC or Prism Launcher
  • Run Technic Launcher
  • Change the default “JAVA EXECUTABLE” to other than the bundled Java runtime in a Minecraft Launcher “Installation”

For Minecraft 1.17-1.20.4 we recommended using Java 17.

For Minecraft 1.20.5 and higher we recommend using Java 21.

Video Tutorial

See the video tutorial by Kennas here or click the image below:


STEP 1: Verify if Java is already installed

Open the Run dialog by using the Windows+R hotkey. Enter cmd in the textbox and click OK This will open a command window.

In the command window type java -version and press Enter

If Java is already installed you will see something like this:

STEP 2: Uninstall previous Java versions

If you already have Java installed and you want to update/replace it, you may want to uninstall any Java version(s) installed in your system using the Operating System normal procedure for uninstalling programs.

STEP 3: Install Java

To download the Java 17 installer, from here.

Choose the JDK .msi:

Open the JAVA installer you just downloaded:

When installing Java, change the way features will be installed:

Set the following features to “Entire feature will be installed on local hard drive”:

  • Set JAVA_HOME variable
  • JavaSoft (Oracle) registry keys

Finish the installation, then go back to STEP 1 to verify that Java was installed correctly.

player/tutorials/java/windows.txt · Last modified: 2024/06/05 03:49 by skycatminepokie