Android Development with Kotlin

The toString method

Generated methods contain the names and values of all properties declared in the primary constructor:

    data class Product(var name:String, var price:Double) 
    val productA = Product("Spoon", 30.2) 
    println(productA) // prints: Product(name=Spoon, price=30.2) 

We can actually log meaningful data to a console or log file, instead of the class name and memory address as in Java (Person@a4d2e77). This makes the debugging process much simpler, because we have a proper, human-readable format.