JavaFX is locking the app when after ActionEvent is done - javafx-2

Question

I am building a menu (file, view, help, etc.). For ex. in File you have upload and exit (both working fine). In help I have some topics: ACF, ARIMA, HoltWinter, the idea is when you chose one of these a text to be displayed in a GridPane. The problem is when you chose one, it displays its text, but it also locks the whole app and you can do nothing, except close the app.
This is a file chooser and it's working just fine:
MenuItem upload = new MenuItem("Upload");
upload.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("Open Resource File");
fileChooser.showOpenDialog(primaryStage);
}
});
And here is an event, which is blocking the app:
MenuItem acfH = new MenuItem("ACF");
acfH.setOnAction(new EventHandler<ActionEvent>(){
public void handle(ActionEvent event){
fr.md.pack.TextClass.acfText.setFill(Color.FIREBRICK);
fr.md.pack.TextClass.acfText.setText(fr.md.pack.StringClass.aboutACF);
grid.add(fr.md.pack.TextClass.acfText,1,10);
}
});
Any suggestions how to solve the issue?
Thanks in advance.
Here is the whole code:
public class MD extends Application {
#Override
public void start(final Stage primaryStage) throws IOException {
primaryStage.setTitle("Crude oil price prediction");
primaryStage.getIcons().add(new Image("file:resources/images/DukeWithHelmet.png"));
final GridPane grid = new GridPane();
grid.setAlignment(Pos.CENTER);
grid.setHgap(10);
grid.setVgap(10);
grid.setPadding(new Insets(25, 25, 25, 25));
Group root = new Group();
MenuBar menuBar = new MenuBar();
Scene scene = new Scene(root, 500,500, Color.WHITE);
scene.getStylesheets().add(this.getClass().getResource("style.css")
.toExternalForm());
primaryStage.setTitle("Crude oil price predicition");
menuBar.prefWidthProperty().bind(primaryStage.widthProperty());
Menu file = new Menu("File2");
MenuItem upload = new MenuItem("Upload");
upload.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("Open Resource File");
fileChooser.showOpenDialog(primaryStage);
}
});
MenuItem exit = new MenuItem("Exit");
exit.setMnemonicParsing(true);
exit.setAccelerator(new KeyCodeCombination(KeyCode.X,KeyCombination.CONTROL_DOWN));
exit.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
Platform.exit();
}
});
Menu test = new Menu("Test");
MenuItem arima = new MenuItem ("ARIMA");
arima.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
}
});
MenuItem acf = new MenuItem ("ACF");
acf.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
}
});
MenuItem pacf = new MenuItem ("PACF");
pacf.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
}
});
MenuItem hw = new MenuItem ("HoltWinters");
hw.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
}
});
Menu help = new Menu("Help");
MenuItem arimaH = new MenuItem ("ARIMA");
arimaH.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
fr.md.pack.TextClass.arimaText.setFill(Color.FIREBRICK);
fr.md.pack.TextClass.arimaText.setText(fr.md.pack.StringClass.aboutArima);
grid.add(fr.md.pack.TextClass.arimaText, 1, 10);
}
});
MenuItem acfH = new MenuItem("ACF");
acfH.setOnAction(new EventHandler<ActionEvent>(){
public void handle(ActionEvent event){
fr.md.pack.TextClass.acfText.setFill(Color.FIREBRICK);
fr.md.pack.TextClass.acfText.setText(fr.md.pack.StringClass.aboutACF);
grid.add(fr.md.pack.TextClass.acfText,1,10);
}
});
MenuItem pacfH = new MenuItem ("PACF");
pacfH.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
fr.md.pack.TextClass.pacfText.setFill(Color.FIREBRICK);
fr.md.pack.TextClass.pacfText.setText(fr.md.pack.StringClass.aboutPACF);
grid.add(fr.md.pack.TextClass.pacfText, 1, 10);
}
});
MenuItem hwH = new MenuItem ("HoltWinters");
hwH.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
fr.md.pack.TextClass.hwText.setFill(Color.FIREBRICK);
fr.md.pack.TextClass.hwText.setText(fr.md.pack.StringClass.aboutHW);
grid.add(fr.md.pack.TextClass.hwText, 1, 10);
}
});
Menu about = new Menu("About");
MenuItem thisS = new MenuItem ("About this software");
thisS.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
fr.md.pack.TextClass.textRef.setFill(Color.FIREBRICK);
fr.md.pack.TextClass.aboutSoft.setText(fr.md.pack.StringClass.aboutSofttext);
grid.add(fr.md.pack.TextClass.aboutSoft, 1, 40);
}
});
MenuItem R = new MenuItem ("About R");
R.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
fr.md.pack.TextClass.textRef.setFill(Color.FIREBRICK);
fr.md.pack.TextClass.aboutR.setText(fr.md.pack.StringClass.aboutRtext);
grid.add(fr.md.pack.TextClass.aboutR, 1, 40);
}
});
MenuItem RServe = new MenuItem ("About RServe");
RServe.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
fr.md.pack.TextClass.textRef.setFill(Color.FIREBRICK);
fr.md.pack.TextClass.textRef.setText(fr.md.pack.StringClass.aboutText);
grid.add(fr.md.pack.TextClass.textRef, 1, 40);
}
});
file.getItems().addAll(upload,exit);
test.getItems().addAll(arima,acf,pacf,hw);
help.getItems().addAll(arimaH,acfH,pacfH,hwH);
about.getItems().addAll(thisS, R, RServe);
menuBar.getMenus().addAll(file,test,help,about);
root.getChildren().addAll(menuBar,grid);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
The classes used are just containing the strings to display:
package fr.md.pack;
public class StringClass {
final static String aboutText = "Малко информация за RServe.";
final static String aboutRtext = "Малко инфо за Р";
final static String aboutSofttext = "Малко инфо за софта";
final static String aboutArima = "Малко инфо за ARIMA";
final static String aboutACF = "Малко инфо за ACF";
final static String aboutPACF = "Малко инфо за PACF";
final static String aboutHW = "Малко инфо за Holt Winters";
}

Answer 1

Well, I just installed Java 8 and surprise....everything is working just fine. I used till now Java 1.7 update 45 and it was locking my application as soon as I try to use the Action event. With Java 8 it's working but not without some bugs....