@Ann(Foo.i, Foo.s, Foo.f, Foo.d, Foo.l, Foo.b, Foo.bool, Foo.c, Foo.str) class MyClass fun box(): String { val ann = MyClass::class.java.getAnnotation(Ann::class.java) if (ann == null) return "fail: cannot find Ann on MyClass}" if (ann.i != 2) return "fail: annotation parameter i should be 2, but was ${ann.i}" if (ann.s != 2.toShort()) return "fail: annotation parameter i should be 2, but was ${ann.i}" if (ann.f != 2.toFloat()) return "fail: annotation parameter i should be 2, but was ${ann.i}" if (ann.d != 2.toDouble()) return "fail: annotation parameter i should be 2, but was ${ann.i}" if (ann.l != 2.toLong()) return "fail: annotation parameter i should be 2, but was ${ann.i}" if (ann.b != 2.toByte()) return "fail: annotation parameter i should be 2, but was ${ann.i}" if (!ann.bool) return "fail: annotation parameter i should be true, but was ${ann.i}" if (ann.c != 'c') return "fail: annotation parameter i should be c, but was ${ann.i}" if (ann.str != "str") return "fail: annotation parameter i should be str, but was ${ann.i}" return "OK" } @Retention(AnnotationRetention.RUNTIME) annotation class Ann( val i: Int, val s: Short, val f: Float, val d: Double, val l: Long, val b: Byte, val bool: Boolean, val c: Char, val str: String ) class Foo { companion object { const val i: Int = 2 const val s: Short = 2 const val f: Float = 2.0.toFloat() const val d: Double = 2.0 const val l: Long = 2 const val b: Byte = 2 const val bool: Boolean = true const val c: Char = 'c' const val str: String = "str" } }