Import Class: error: not found: object Controller - scala

Question

I'm a beginner in scala, without java background. I don't understand the import system.
I have my application, where i use the import
import Array._
import List._
import Controller.api
object scalaStart{
def main(args: Array[String]){
var apiCtrl = new api()
apiCtrl.getById(1)
println(apiCtrl.title)
}
}
And this is the class:
package Controller
class api {
var id:Int
var title:String
var description:String
def getById(id:Int){
if(id = 1){
this.id = 1
this.title = s"Title Nummer ${this.id}"
this.description = s"Description Nummer ${this.id}"
}else{
this.id = 1
this.title = s"Artikel mit der ID: ${this.id} existiert nicht."
this.description = s"Kein Eintrag mit der ID: ${this.id}"
}
}
}
i checked also only import api and import controller and wildcards controller._ controller.api._.

Answer 1

Philipp, your code actually does not compile.
In the line if(id=1){ it should be if(id==1).
Try to correct this and rebuild your project.
You will notice that compiler will give you another error:
Error:(5, 7) class api needs to be abstract, since: it has 3
unimplemented members. /** As seen from class api, the missing
signatures are as follows. * For convenience, these are usable as
stub implementations. */ def description_=(x$1: String): Unit = ???
def id_=(x$1: Int): Unit = ??? def title_=(x$1: String): Unit = ???
class api {
^
This is because in Scala you can't leave variable declarations abstract as you could do in Java. Instead of var id:Int you need to put something liek var id:Int = 0 and the same for other declared variables.