Android kotlin JvmOverloads

@JvmOverloads is an annotation in Kotlin that allows the compiler to generate multiple versions of a method or constructor with different parameter sets. This annotation is used to reduce the amount of boilerplate code needed when calling a method or constructor with default parameter values.

When a method or constructor is annotated with @JvmOverloads, the Kotlin compiler generates additional static methods or constructors with fewer parameters. These generated methods or constructors have default parameter values for the omitted parameters.

For example, consider the following Kotlin class:

class Person(val name: String, val age: Int = 0, val address: String = "")

By default, this class has a primary constructor with three parameters: name, age, and address. However, if we annotate the constructor with @JvmOverloads, the Kotlin compiler will generate additional constructors with fewer parameters:

class Person @JvmOverloads constructor(val name: String, val age: Int = 0, val address: String = "") {
    // additional constructors with fewer parameters will be generated
}

With this annotation, we can now create a Person object using fewer parameters:

val person1 = Person("John")
val person2 = Person("Jane", 25)
val person3 = Person("Bob", 30, "123 Main St")

In the above code, person1 is created with only the name parameter, while person2 is created with name and age parameters, and person3 is created with all three parameters. The Kotlin compiler generates the appropriate constructor calls with default parameter values for the omitted parameters