Learn Java Online is an excellent online interactive resource to introduce you to Java.
Work through the following sections:
Go through this tutorial, which will ensure that you have Gradle installed on your computer and that you’re able to create a new application, build it, and run it.
As an alternative to using the online editor, you may try to create a project inside IntelliJ IDEA with a file for each of these categories. Make sure each file has a public static void main(String args){} method so it can be executed.
Take screenshots of each of your solutions from Learn Java Online, and a screenshot of your successful ./gradlew run, and submit them to Canvas.