Exception in thread “JavaFX Application Thread” java.lang.IllegalArgumentException: argument type mismatch
I have to make a Sudoku game. When I tried code it I found a problem, which I can't repair on my own. I'm using SceneBuilder.If you have any ideas to resolve my problem or some advices I would be really thankful That's my code: FXMLDocumentController public class FXMLDocumentController implements Initializable { @FXML private GridPane grid; public TextField[][] field= new TextField[9][9]; public class getXY{ private TextField temp; private int a; int x,y; public int getNodeByRowColumnIndex(final int row,final int column,GridPane gridPane) { Node result = null; ObservableList<Node> childrens =