You can download the Java SE 11 Development Kit here:
The current JDK SE 11 is Build 11.0.3. Be sure to download and install the correct JDK version for your computer. “macOS” and “Windows x64” will be the most common downloads.
Please note: Windows Users will need to modify their Path to point to the Java JDK’s bin folder. Please see Oracle's Documentation for instructions. You’ll want to add something like
C:\Program Files\Java\jdk-11.0.3\bin to your Path environment variable.
Once you’ve run the JDK installer, open a Command Prompt in Windows or a Terminal on OSX, and type in the following command:
You should see something like this in response:
Be sure the version shown is 11.0. If the java or javac commands cannot be found, there may be an issue with your installation. If you’re using Windows, you probably forget to add the Java folder to your system path. See the link above for instructions.
Please note: If you have a newer Java JDK version (12.0 or newer) installed, that’s probably OK, but be careful not to use any JDK12+ commands in your Java module, because they won’t work in our Java 11 virtual machine.
If your Java version is correct, and you’ve installed the Voltage Module Designer, then you’re done! Let’s start building modules!