Thank you. Your program works. I made a silly mistake. Create scene inside
the for loop.
Take my greetings.
Samiul alom sium
On Mon, Jul 6, 2020 at 3:19 PM Geertjan Wielenga <geert...@apache.org>
wrote:
> This is probably what you want to do:
>
> package com.mycompany.mavenproject22;
>
> import javafx.application.Application;
> import javafx.scene.Scene;
> import javafx.scene.layout.Pane;
> import javafx.scene.paint.Color;
> import javafx.stage.Stage;
> import javafx.scene.shape.Rectangle;
>
> /**
> * JavaFX App
> */
> public class App extends Application {
>
> @Override
> public void start(Stage primaryStage) {
>
> double WIDTH = 200;
> double HEIGHT = 200;
>
> // create a pane
> Pane pane = new Pane();
>
> for (int i = 0; i < 8; i++) {
> boolean isWhite = i % 2 == 0;
> for (int j = 0; j < 8; j++) {
> Rectangle rectangle = new Rectangle(i * WIDTH / 8,
> j * HEIGHT / 8, WIDTH / 8, HEIGHT / 8);
>
> rectangle.setStroke(Color.BLACK);
>
> if (isWhite) {
> rectangle.setFill(Color.WHITE);
> } else {
> rectangle.setFill(Color.BLACK);
> }
>
> isWhite = !isWhite;
>
> pane.getChildren().add(rectangle);
>
> } // end of inner for loop
> } // end of outer for loop
>
> // create scene
> Scene scene = new Scene(pane, WIDTH, HEIGHT);
> primaryStage.setTitle("Display A CheckBoard");
> primaryStage.setScene(scene);
> primaryStage.show();
>
> }
>
> public static void main(String[] args) {
> launch();
> }
>
> }
>
>
> Thanks,
>
> Gj
>
> On Mon, Jul 6, 2020 at 11:10 AM Geertjan Wielenga <geert...@apache.org>
> wrote:
>
>> You're creating a scene at the end of some kind of nested for loop?
>>
>> Gj
>>
>> On Mon, Jul 6, 2020 at 10:54 AM Brain Rebooting <siumastroma...@gmail.com>
>> wrote:
>>
>>> OK. Here I am going to submit my simple source code of JavaFX program,
>>> that should show a black and white chessboard.
>>>
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>>
>>> import javafx.application.Application;
>>> import javafx.scene.Scene;
>>> import javafx.scene.layout.Pane;
>>> import javafx.scene.paint.Color;
>>> import javafx.stage.Stage;
>>> import javafx.scene.shape.Rectangle;
>>>
>>> /**
>>> *
>>> * @author samiul alom sium
>>> * date: 07.07.2020
>>> *
>>> * problem: (Game: display a checkerboard) Write a program that displays
>>> * a checkerboard in which each white and black cell is a Rectangle
>>> * with a fill color black or white.
>>> */
>>>
>>> public class DisplayACheckBoard extends Application {
>>>
>>> @Override
>>> public void start(Stage primaryStage) {
>>>
>>> double WIDTH = 200;
>>> double HEIGHT = 200;
>>>
>>> // create a pane
>>> Pane pane = new Pane();
>>>
>>> for(int i = 0; i < 8; i++){
>>> boolean isWhite = i % 2 == 0;
>>> for(int j = 0; j < 8; j++){
>>> Rectangle rectangle = new Rectangle(i * WIDTH / 8,
>>> j * HEIGHT / 8, WIDTH / 8, HEIGHT / 8);
>>>
>>> rectangle.setStroke(Color.BLACK);
>>>
>>> if(isWhite){
>>> rectangle.setFill(Color.WHITE);
>>> }
>>> else {
>>> rectangle.setFill(Color.BLACK);
>>> }
>>>
>>> isWhite = !isWhite;
>>>
>>> pane.getChildren().add(rectangle);
>>>
>>> // create scene
>>> Scene scene = new Scene(pane, WIDTH, HEIGHT);
>>> primaryStage.setTitle("Display A CheckBoard");
>>> primaryStage.setScene(scene);
>>> primaryStage.show();
>>>
>>> } // end of inner for loop
>>> } // end of outer for loop
>>>
>>> }
>>>
>>> public static void main(String[] args) {
>>> launch(args);
>>>
>>>
>>> ------------------------------------------------------------------------------------------------------------------------------------------------------
>>>
>>> Here I used:
>>>
>>> JDK: amazon corretto 1.8.0 252
>>> OS: Ubuntu 18.04.4 LTS
>>> IDE: Apache NetBeans 12
>>> Build Tool: Ant
>>>
>>> //
>>> Extra info:
>>> Even netbeans-12 error detector didn't show any error on the above code.
>>> Problem arises when I am going to run the code. I try to clean and build
>>> projects and then run the projects, but still same results come in. But the
>>> strange thing is, this same source code works in IntelliJ IDEA community
>>> edition with same compiler. Even I can't remember I could see any GUI
>>> result of my JavaFX program in NB-12, but I could do that well in NB-11.3
>>> //
>>>
>>> On Mon, Jul 6, 2020 at 2:52 PM Brain Rebooting <siumastroma...@gmail.com>
>>> wrote:
>>>
>>>> OK. Here I am going to submit my simple source code of JavaFX program,
>>>> that should show a black and white chessboard.
>>>>
>>>>
>>>> ------------------------------------------------------------------------------------------------------------------------------------------------
>>>>
>>>>
>>>> import javafx.application.Application;
>>>> import javafx.scene.Scene;
>>>> import javafx.scene.layout.Pane;
>>>> import javafx.scene.paint.Color;
>>>> import javafx.stage.Stage;
>>>> import javafx.scene.shape.Rectangle;
>>>>
>>>> /**
>>>> *
>>>> * @author samiul alom sium
>>>> * date: 07.07.2020
>>>> *
>>>> * problem: (Game: display a checkerboard) Write a program that displays
>>>> * a checkerboard in which each white and black cell is a Rectangle
>>>> * with a fill color black or white.
>>>> */
>>>>
>>>> public class DisplayACheckBoard extends Application {
>>>>
>>>> @Override
>>>> public void start(Stage primaryStage) {
>>>>
>>>> double WIDTH = 200;
>>>> double HEIGHT = 200;
>>>>
>>>> // create a pane
>>>> Pane pane = new Pane();
>>>>
>>>> for(int i = 0; i < 8; i++){
>>>> boolean isWhite = i % 2 == 0;
>>>> for(int j = 0; j < 8; j++){
>>>> Rectangle rectangle = new Rectangle(i * WIDTH / 8,
>>>> j * HEIGHT / 8, WIDTH / 8, HEIGHT / 8);
>>>>
>>>> rectangle.setStroke(Color.BLACK);
>>>>
>>>> if(isWhite){
>>>> rectangle.setFill(Color.WHITE);
>>>> }
>>>> else {
>>>> rectangle.setFill(Color.BLACK);
>>>> }
>>>>
>>>> isWhite = !isWhite;
>>>>
>>>> pane.getChildren().add(rectangle);
>>>>
>>>> // create scene
>>>> Scene scene = new Scene(pane, WIDTH, HEIGHT);
>>>> primaryStage.setTitle("Display A CheckBoard");
>>>> primaryStage.setScene(scene);
>>>> primaryStage.show();
>>>>
>>>> } // end of inner for loop
>>>> } // end of outer for loop
>>>>
>>>> }
>>>>
>>>> public static void main(String[] args) {
>>>> launch(args);
>>>>
>>>>
>>>> ------------------------------------------------------------------------------------------------------------------------------------------------------
>>>>
>>>> Here I used:
>>>>
>>>> JDK: amazon corretto 1.8.0 252
>>>> OS: Ubuntu 18.04.4 LTS
>>>> IDE: Apache NetBeans 12
>>>> Build Tool: Ant
>>>>
>>>> //
>>>> Extra info:
>>>> Even netbeans-12 error detector didn't show any error on the above
>>>> code. Problem arises when I am going to run the code. I try to clean and
>>>> build projects and then run the projects, but still same results come in.
>>>> But the strange thing is, this same source code works in IntelliJ IDEA
>>>> community edition with same compiler. Even I can't remember I could see any
>>>> GUI result of my JavaFX program in NB-12, but I could do that well in
>>>> NB-11.3
>>>> //
>>>>
>>>> On Mon, Jul 6, 2020 at 1:08 PM Geertjan Wielenga <geert...@apache.org>
>>>> wrote:
>>>>
>>>>> Can you provide any info so someone can reproduce the problem?
>>>>>
>>>>> Gj
>>>>>
>>>>> On Mon, 6 Jul 2020 at 08:02, Brain Rebooting <siumastroma...@gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Probably not only this specific program. After installing NetBeans
>>>>>> 12, none of my JavaFX program show output (with ant build). But NetBeans
>>>>>> 11.3 with all same configuration, did output my JavaFX program.
>>>>>>
>>>>>> On Mon, Jul 6, 2020 at 11:47 AM Brain Rebooting <
>>>>>> siumastroma...@gmail.com> wrote:
>>>>>>
>>>>>>>
>>>>>>> Problems started from this line on the console:
>>>>>>>
>>>>>>> Exception in Application start method
>>>>>>>
>>>>>>> But when I run the same program in IntelliJ IDEA community edition,
>>>>>>> it just works and literally I don't see any error on my own source code.
>>>>>>> Apache NetBeans error detector don't show any error on my source code.
>>>>>>> But
>>>>>>> still when I try to execute it, these errors are displaying on the
>>>>>>> console.
>>>>>>>
>>>>>>> On Mon, Jul 6, 2020 at 11:43 AM Emilian Bold <emilian.b...@gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Please send email to the mailing list (reply all) not just to me.
>>>>>>>>
>>>>>>>> --emi
>>>>>>>>
>>>>>>>> lun., 6 iul. 2020, 08:34 Brain Rebooting <siumastroma...@gmail.com>
>>>>>>>> a scris:
>>>>>>>>
>>>>>>>>> Problems started from this line on the console:
>>>>>>>>>
>>>>>>>>> Exception in Application start method
>>>>>>>>>
>>>>>>>>> But when I run the same program in IntelliJ IDEA community
>>>>>>>>> edition, it just works and literally I don't see any error on my own
>>>>>>>>> source
>>>>>>>>> code. Apache NetBeans error detector don't show any error on my source
>>>>>>>>> code. But still when I try to execute it, these errors are displaying
>>>>>>>>> on
>>>>>>>>> the console.
>>>>>>>>>
>>>>>>>>> On Mon, Jul 6, 2020 at 11:30 AM Emilian Bold <
>>>>>>>>> emilian.b...@gmail.com> wrote:
>>>>>>>>>
>>>>>>>>>> Start by telling us which errors you see.
>>>>>>>>>>
>>>>>>>>>> --emi
>>>>>>>>>>
>>>>>>>>>> lun., 6 iul. 2020, 08:04 Brain Rebooting <
>>>>>>>>>> siumastroma...@gmail.com> a scris:
>>>>>>>>>>
>>>>>>>>>>> Why Apache NetBeans 12 don't execute my JavaFX program? I run
>>>>>>>>>>> the same to same program in IntelliJ IDEA community edition and it
>>>>>>>>>>> works.
>>>>>>>>>>> But NetBeans shows there are some errors. Here is my software usage:
>>>>>>>>>>>
>>>>>>>>>>> Apache NetBeans 12
>>>>>>>>>>> Ubuntu 18
>>>>>>>>>>> JDK 8
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Samiul alom sium
>>>>>>>>>>> Bangladesh
>>>>>>>>>>>
>>>>>>>>>>
