[英]How to pass variable to another class java
我有FXMLDocumentController.java,我想將名稱(文本填充)發送給anoterclass
public class FXMLDocumentController implements Initializable {
@FXML
private Label label;
@FXML
private Button button;
@FXML
private TextField name;
private String sss = "";
@FXML
private void handleButtonAction(ActionEvent event) {
System.out.println("You clicked me!");
label.setText("Hello World!");
sss=name.getText();
setSss(sss);
System.out.print(sss);
}
@Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
public String getSss() {
return sss;
}
public void setSss(String sss) {
this.sss = sss;
}
這是另一個類login.java
public class Login extends Application {
@Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
FXMLDocumentController fx = new FXMLDocumentController();
System.out.print(fx.getSss());
}
我調試並且fx.getSss為null我該怎么辦? 謝謝你的評論
切勿在代碼中實例化控制器。 而是: FXMLLoader loader = new FXMLLoader(getClass().getResource("FXMLDocument.fxml")); FXMLDocumentController fx = loader.getController();
FXMLLoader loader = new FXMLLoader(getClass().getResource("FXMLDocument.fxml")); FXMLDocumentController fx = loader.getController();
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