KotlinSealedInheritorsInJava

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2025.3-rc-2398 B

Reports attempts to inherit from Kotlin sealed interfaces or classes in Java code.

Example:

// Kotlin file: MathExpression.kt

sealed class MathExpression

data class Const(val number: Double) : MathExpression()
data class Sum(val e1: MathExpression, val e2: MathExpression) : MathExpression()

// Java file: NotANumber.java

public class NotANumber extends MathExpression {
}