Kotlin to JavaFX, using java getters in kotlin?

So I have created java getters for several TextFields, now I am trying to use a textfield object called projectName in a kotlin class file, this is what I wrote (where it says projectName, it is highlighted red)

fun createData () {
val projectData = projectInformation.projectName
}

Here is my java getter for reference

TextField projectName = new TextField();
public TextField getProjectName() { return projectName; }

I get an error when I try to run the program

Kotlin: Unresolved reference: projectName

Please do not send me the Java to Kotlin documentation as I have already had a look at it. Now the fix to this is to make my variable static, so

static TextField projectName = new TextField();

It now works, but does this not defeat the whole purpose of getters? I also tried making the variable private because I was told it could have possibly had visibility conflicts since my TextFields are package-visible.

Just for further information, I am using java and Kotlin to develop an application, I have used these TextFields to create a JavaFX GUI, the logic/backend of the GUI is using Kotlin which will also be used to store information into a database. Gist of my entire program : https://gist.github.com/Jabz259/bbd7a10ba447c955b4481fff9c0ec58e

Given the gist you linked

> Yes projectInformation is an instance of a class where getProjectName() is defined

is wrong. It is in fact the class projectInformation itself, not an instance of it; like writing

val x = String.length

instead of

val str = "some string"
val x = str.length

This would explain why adding static works, but that's probably not what you actually want to do.

If you follow naming conventions and use upper camel case for classes/interfaces (e.g. ProjectInformation instead of projectInformation) this would decrease the chance for this problem.

You define a local variable here, which is probably useless:

fun createData () {
val projectData = projectInformation.projectName
}

projectName sounds alike a String to me, but lateinit should do the job:

lateinit var projectName: TextView

And generally speaking, getters and setter work a whole lot different in Kotlin:

https://kotlinlang.org/docs/reference/properties.html

"Kotlin Extensions with synthetic views" (synthetic properties) was never recommend, as they don't work cross-module. DataBinding would be the better and suggested approach for what you are trying to accomplish there. See Why kotlinx synthetic is no longer a recommended practice.