Installing the Module Designer 

Installing the Module Designer tool requires two main steps:

  1. Running the Module Designer Installer.
  2. Install the Java Development Kit for Java SE 8.

You can download the Java SE 8 Development Kit here.

The current JDK SE 8 is Build 8u181. 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 this documentation page for instructions. You’ll want to add something like ​C:\Program Files\Java\jdk1.8.0_181\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:

java -version

You should see something like this in response:

java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)

Next, type in this command:

javac -version

You should see something like this in response:

javac 1.8.0_181

Be sure the version shown in both of these tests is at least 1.8. ​​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 installer, that’s probably OK, ​but be careful not to use any JDK9+ commands in your Java module,​ because they won’t run in our Java 8 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!