Question

Suppose I have the following

class SimpleClass (myInt: Int, myString: String) {

}

What is wrong with the following?

val mySimple = new SimpleClass(1, "hi")
println(mySimple.myInt)

Answer 1

If you want the contructor parameters to be available as fields of the class, you have to declare them as vals or vars:

class SimpleClass (val myInt: Int, val myString: String) {

}