Java/Kotlin Basics for FIRST Robotics

A set of short, beginner-friendly Java and Kotlin exercises for high school robotics students. Each exercise is a separate Gradle subproject with its own README, starter code, and JUnit tests so one broken module will not block the rest.

How to use

• Install JDK 17+ and Gradle (or use the included Gradle wrapper scripts once generated).
• From the repo root, run ./gradlew :java:module-name:test for the Java track or ./gradlew :kotlin:module-name:test for the Kotlin track.
• Each module README explains goals, starter files, and what to implement. Tests will fail until you complete the exercise.
• Timebox each module to 15–30 minutes.

Layout

• Java exercises live in java/<module>.
• Kotlin mirrors live in kotlin/<module> and point to the Java README for full instructions, but code lives under src/main/kotlin and src/test/kotlin.

Modules

1. 01-setup-hello-world
2. 02-variables-and-types
3. 03-expressions-and-control-flow
4. 04-loops-and-iteration
5. 05-methods-and-parameters
6. 06-arrays-and-lists
7. 07-classes-and-objects
8. 08-encapsulation-and-immutability
9. 09-enums-and-switch
10. 10-error-handling
11. 11-basic-io
12. 12-unit-testing-basics
13. 13-test-driven-exercise
14. 14-collections-and-maps
15. 15-inheritance-and-interfaces
16. 16-functional-basics
17. 17-capstone-mini-robot-command

Work through them in order or pick topics you want to practice. Good luck and have fun! 🚀