javakotlindata-classjava-record

Java Records vs Kotlin Data Classes


Java 14 offers a new feature called records, helping to create JavaBeans. What is the difference between Kotlin's data classes and Java records?


Solution

  • This is a great article about all those differences.

    In summary:

    Similarities

    Differences

    Kotlin's data classes support many other little things:

    data class (Kotlin) record (Java)
    copy method for easier object creation no copy method
    variables can be var or val variables can only be final
    can inherit from other non-data classes no inheritance
    can define non-constructor mutable variables can define only static variables

    Both are great for reducing the code bloat.