如何从外部类将多个表单上的DatePicker更改为自定义格式

import java.text.SimpleDateFormat;

public class CustomDateFormat {
    public static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd");
}

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.DatePicker;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class Main extends Application {
    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        DatePicker datePicker1 = new DatePicker();
        DatePicker datePicker2 = new DatePicker();

        // 设置DatePicker的格式为自定义格式
        datePicker1.setConverter(new CustomDateConverter());
        datePicker2.setConverter(new CustomDateConverter());

        VBox vbox = new VBox(datePicker1, datePicker2);
        Scene scene = new Scene(vbox, 200, 200);
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

import javafx.util.StringConverter;

public class CustomDateConverter extends StringConverter<LocalDate> {
    @Override
    public String toString(LocalDate date) {
        if (date != null) {
            return CustomDateFormat.DATE_FORMAT.format(date);
        } else {
            return "";
        }
    }

    @Override
    public LocalDate fromString(String string) {
        if (string != null && !string.isEmpty()) {
            try {
                return LocalDate.parse(string, CustomDateFormat.DATE_FORMAT);
            } catch (DateTimeParseException e) {
                // 处理日期解析错误
            }
        }
        return null;
    }
}