Can Kotlin data class have more than one constructor?

Question

I know that data class are like simple models in kotlin with getters and setter by default and are as simple this:

data class User(val name: String, val age:         


        

Answer 1

Data class will ensure consistency and meaningful behavior also we need to have val for immutability.

data class SampleData(val name: String, val age: Int, val email: String ?= null) {
constructor(name: String, age: Int) : this(name, age, null) {

}

}

secondary constructor must delegate to the primary constructor in its definition, so to maintain the immutability, having "null" will work.