KOTLIN PLUGIN GENERATOR
plugin.yml and a JAR it can compile for you before you download it.Why generate a Kotlin plugin
Null safety where Bukkit needs it
Bukkit hands back null constantly - offline players, missing worlds, absent config keys. Kotlin makes those cases explicit at compile time instead of at 2am in your server console.
A real Gradle project
build.gradle.kts wired for the Kotlin JVM plugin and the Paper/Spigot repositories, with the standard source layout. Not a single file you have to find a home for.
Far less boilerplate
Data classes for config models, extension functions on Player and ItemStack, and scope functions instead of nested null checks. The same logic in noticeably less code.
Also targets Folia and proxies
If you are on Paper’s multithreaded fork, note that Folia removes the single main thread and needs region-aware scheduling - pick the Folia target on the plugin generator so the scheduling is right from the start. For network-level work use the proxy plugin generator. The plugin docs explain the differences.
Example prompts
Kotlin plugin generator FAQ
Do Kotlin plugins run on a normal Spigot or Paper server?
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Yes. Kotlin compiles to ordinary JVM bytecode, so the server neither knows nor cares which language the plugin was written in. It loads exactly like a Java plugin.
Do I need to install anything on the server?
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No. The Kotlin standard library is shaded into the JAR at build time, so the plugin is self-contained. That does make the JAR larger than an equivalent Java plugin.
Maven or Gradle?
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Gradle. The Kotlin target uses the Gradle Kotlin plugin, which is the standard toolchain for Kotlin on the JVM. The Java targets use Maven.
What does Kotlin actually buy me here?
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Mostly null safety and less ceremony. Bukkit APIs return null in a lot of places - getPlayer, getWorld, config lookups - and Kotlin's type system forces you to handle that at compile time instead of discovering it as a NullPointerException in production. Data classes, extension functions and scope functions also cut a lot of boilerplate out of config and listener code.
Can I mix Java and Kotlin in one plugin?
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The generator produces a Kotlin source set. Gradle can compile mixed sources, so you can add Java files afterwards, but the generated project is Kotlin-first.
Should I pick Kotlin or Java?
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Pick Java if you want maximum compatibility with tutorials, existing snippets and other people's code, since nearly all Bukkit material assumes Java. Pick Kotlin if you are comfortable with it and want terser, null-safe code - the API surface is identical either way.
Other Codexe generators
Prefer Java, or working somewhere else in the stack? Codexe also generates:
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