如何在另一个 class 中获取实例？ 在 java

Question

I am learning javaFX but I can't figure out how to get an instance that I created in another controller into my new Controller.

Class of Auto

package com.example.test1;

public class Auto {
    private static String merk;
    private static double prijs;

    public Auto(String merk, double prijs) {
        this.merk = merk;
        this.prijs = prijs;
    }

    public String getMerk() {
        return merk;
    }

    public double getPrijs() {
        return prijs;
    }

}

My controller of my main fxml

import java.io.IOException;

public class Controller {

    public Label random;
    public Button btn1;
    public static Auto auto;

    public void maakNieuweAuto() {
        auto = new Auto("bmw", 900);
    }

    public void button() throws IOException {
        Parent root = FXMLLoader.load(getClass().getResource("Auto.fxml"));
        Stage window = (Stage) btn1.getScene().getWindow();
        window.setScene(new Scene(root, 750, 500));
    }


}

My controller of my second fxml

package com.example.test1;

import javafx.scene.text.Text;

import static com.example.test1.Controller.auto;

public class AutoController {

    public Text Merk;
    public Text Prijs;

    public AutoController() {
            Merk.setText(auto.getMerk());
            Prijs.setText("" + auto.getPrijs());
    }
}

Can somebody help me please?

I really appreciate it thanks.

Answer 1

Add this to your controller of your main fxml

Public Controller (){ }

And this on new controller fxml Controller controller = new Controller (); controller.maakNieuweAuto();