A data class is a class that mostly serves as a container for some data, represented by properties in the constructor.

Kotlin automatically generates a lot of methods for a data class, including:

  • a toString() method that shows all of the constructor properties

  • an equals() method that uses the constructor properties to determine if two instances of the class are equal

  • a copy() method that makes it easy to create a new instance of the class by copying the values of another instance and overriding them selectively

You can learn more about this in:
Tags:
Abstract Classes Adding Functions to Classes Adding Properties to Classes Chaining to Superclass Functions Checking Inheritance Via is Classes and Instances Constructor Init-Only Parameters Constructors Data Class enum and Functions enum and when() enum Class enum name and ordinal enum valueOf() enum values() Formal Constructor Declaration Hello, World! (In a Class) Inheritance Inheritance and Constructors Inheritance and Functions Inheritance and Overriding Functions Init Block Inner Classes Inner Classes and Outer this Inner Classes and this is and when Manual Casts Nested Classes Nested Classes and Private Access Non-Nested Sealed Classes override is Transitive Overriding Properties Passing this as a Parameter Printing the Class of Numbers Sealed Classes Sealed Classes and when Secondary Constructors Smart Casts The this Pseudo-Property
Run Edit