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kotlinlang

*<https://blog.jetbrains.com/kotlin/2026/07/kotlin-comes-to-bluej/|Kotlin support is now available in BlueJ>* :blue_heart:

Exciting news for everyone teaching introductory programming with Kotlin!

Developed in collaboration with the Programming Education Tools Group at King’s College London, this release brings Kotlin to one of the world’s most popular IDEs for teaching object-oriented programming.
Download BlueJ and explore the onboarding materials: