https://www.jetbrains.com/education/
- Call me Maybe - Usage of Java 8 Optional API
Prerequisite: Java 8+, IntelliJ or IntelliJ Edu from https://www.jetbrains.com/education/download/#section=idea
- Download the plugin EduTools from JetBrain Marketplace if you already have IntelliJ
- From the menu: Learn and Teach > import local course
- Select the zipped lessons (from this repository)