This is where Nullability Annotations can help.
That is, it does not do the usual compile-time checks for null handling when dealing with Platform Types. Since all types in Java are nullable, the Kotlin compiler cannot make any null-safety guarantees for Platform Types and will relax nullability errors during compilation. Platform Types are essentially types returned from Java interactions, and are denoted in IDE hints with !, for eg ( String!). In these scenarios it is very common for the newly written Kotlin code to interact with Java, which usually means having to handle Platform Types in Kotlin. Use Java Nullability Annotations to facilitate conversion to KotlinĪ common approach to adopting Kotlin is to use it in existing projects either in new features or by gradually converting existing code from Java to Kotlin.
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