Java Community | Help. Code. Learn.•3w ago

unable to import Gson java dependency to my Maven JavaFXML Project

I have imported a code for a Maven JavaFXML Project and can't add a Gson jar file to my project. it is a required dependency and right clicking the Java Dependency folder doesn't have any options to offer. I have installed the Gson jar file for use and I just need to add it to the project. Ignore the Gson in the 'Dependencies' folder as it was a solution that didn't help.

195 Replies

JavaBot•3w ago

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dan1st•3w ago

Can you show your pom.xml? Is gson there? Do you have a module-info.java file? If so, please show that as well.

AbuAbedOP•3w ago

pom.xml

AbuAbedOP•3w ago

no module-info

dan1st•3w ago

You added it as a runtime dependency so it won't be avaiable at compile-time You probably want to remove the <scope>runtime</scope> from gson see https://canary.discord.com/channels/648956210850299986/1055111097562181684

AbuAbedOP•3w ago

I previously added it as compile but that didn't work Do I still need to try what you propose? I changed it to compile but I get the same problem

dan1st•3w ago

Did you update/reload the Maven project? What exactly happens?

AbuAbedOP•3w ago

This is how it is when I have the dependency as runtime

dan1st•3w ago

What does your pom.xml look like now?

AbuAbedOP•3w ago

pom.xml

AbuAbedOP•3w ago

This is how it looks like I added gson-parent but it made no difference Would you like me to export the project for you to view it?

dan1st•3w ago

and it's still listed under runtime dependencies but not in the dependencies list? You could try running mvn verify

AbuAbedOP•3w ago

that's old now it's under dependencies currently

dan1st•3w ago

ok Do you still have that? Can you run mvn verify from NetBeans on the project? (idk how exactly NetBeans works) If yes, it is the exact same error or a different error?

AbuAbedOP•3w ago

It looks like this now

AbuAbedOP•3w ago

the package com.coursework2.hybrid04 has nothing in it

dan1st•3w ago

Are you sure you don't have a module-info.java file in your project?

AbuAbedOP•3w ago

nvm it does have it

dan1st•3w ago

Add a requires com.google.gson; to it

AbuAbedOP•3w ago

module com.coursework2.hybrid04 {
    requires javafx.controls;
    requires javafx.fxml;

    opens com.coursework2.hybrid04 to javafx.fxml;
    exports com.coursework2.hybrid04;
}

module com.coursework2.hybrid04 {
    requires javafx.controls;
    requires javafx.fxml;

    opens com.coursework2.hybrid04 to javafx.fxml;
    exports com.coursework2.hybrid04;
}

but it's in a different package

dan1st•3w ago

so?

AbuAbedOP•3w ago

dan1st•3w ago

yeah, it should be like that What's the error in the module-info.java? Is opens com.coursework2.hybrid04 to javafx.fxml; the line with the error?

AbuAbedOP•3w ago

no the one below it

dan1st•3w ago

ok so first the gson one the com.google.gson is wrong and needs to be something else you could try requires gson; I don't know the module name of gson by heart actually what error have you been getting there?

AbuAbedOP•3w ago

ok I changed it to that

dan1st•3w ago

Did it fix the error in the module-info.java?

AbuAbedOP•3w ago

it fixed the error I will run the app and see if I run into more errors

dan1st•3w ago

there's still an error left

AbuAbedOP•3w ago

it's the export line

dan1st•3w ago

Do you want your classes to be in hybrid or in com.coursework2.hybrid04? yeah ik the error

AbuAbedOP•3w ago

I will have them in com instead Do I just copy paste and refactor?

dan1st•3w ago

move, not copy paste but yes, using the refactoring thing from NetBeans

AbuAbedOP•3w ago

dan1st•3w ago

btw you might want to use the latest version of gson which is 2.11.0 at some point. If you do, you'd need to change the requires gson; to requires com.google.gson; Does the project work now?

AbuAbedOP•3w ago

Running it from HyBrid04.java, it gives me this error:

Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project HyBrid04: Execution default-compile of goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile failed: Cannot invoke "java.lang.Throwable.getCause()" because "cause" is null -> [Help 1]

To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.

For more information about the errors and possible solutions, please read the following articles:
[Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project HyBrid04: Execution default-compile of goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile failed: Cannot invoke "java.lang.Throwable.getCause()" because "cause" is null -> [Help 1]

To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.

For more information about the errors and possible solutions, please read the following articles:
[Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

dan1st•3w ago

Can you show the full build log? i.e. the full output you are getting?

AbuAbedOP•3w ago

Scanning for projects...

----------------------< com.coursework2:HyBrid04 >----------------------
Building HyBrid04 1.0-SNAPSHOT
--------------------------------[ jar ]---------------------------------

>>> javafx-maven-plugin:0.0.4:run (default-cli) > process-classes @ HyBrid04 >>>

--- maven-resources-plugin:2.6:resources (default-resources) @ HyBrid04 ---
Using 'UTF-8' encoding to copy filtered resources.
Copying 2 resources

--- maven-compiler-plugin:3.8.0:compile (default-compile) @ HyBrid04 ---
------------------------------------------------------------------------
BUILD FAILURE
------------------------------------------------------------------------
Total time:  0.588 s
Finished at: 2024-12-07T18:02:45Z
------------------------------------------------------------------------
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project HyBrid04: Execution default-compile of goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile failed: Cannot invoke "java.lang.Throwable.getCause()" because "cause" is null -> [Help 1]

To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.

For more information about the errors and possible solutions, please read the following articles:
[Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

Scanning for projects...

----------------------< com.coursework2:HyBrid04 >----------------------
Building HyBrid04 1.0-SNAPSHOT
--------------------------------[ jar ]---------------------------------

>>> javafx-maven-plugin:0.0.4:run (default-cli) > process-classes @ HyBrid04 >>>

--- maven-resources-plugin:2.6:resources (default-resources) @ HyBrid04 ---
Using 'UTF-8' encoding to copy filtered resources.
Copying 2 resources

--- maven-compiler-plugin:3.8.0:compile (default-compile) @ HyBrid04 ---
------------------------------------------------------------------------
BUILD FAILURE
------------------------------------------------------------------------
Total time:  0.588 s
Finished at: 2024-12-07T18:02:45Z
------------------------------------------------------------------------
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project HyBrid04: Execution default-compile of goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile failed: Cannot invoke "java.lang.Throwable.getCause()" because "cause" is null -> [Help 1]

To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.

For more information about the errors and possible solutions, please read the following articles:
[Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

dan1st•3w ago

ah I think I know why you probably need a newer version of the maven-compiler-plugin You have

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <release>11</release>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <release>11</release>
                </configuration>
            </plugin>

You probably want to change the <version>3.8.0</version> to <version>3.13.0</version> And if you want to use Java 17, you probably want to change the <release>11</release> to <release>17</release>. If you are using Java 21, that would be <release>21</release> and similar for other Java versions

AbuAbedOP•3w ago

Java dependency says that I am using JDK 22 should I put 22 instead?

dan1st•3w ago

21 or 22, yes you can also pick a lower version than the one you are using <release>21</release> means "requires at least Java 21"

AbuAbedOP•3w ago

I will try running it again

AbuAbedOP•3w ago

This is the output I received

message.txt

dan1st•3w ago

ah you should update gson as I mentioned earlier that one change the version of gson to 2.11.0 and change the requires gson; to requires com.google.gson; in your module-info.java

JavaBot•3w ago

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AbuAbedOP•2w ago

I will get on that tomorrow

JavaBot•2w ago

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AbuAbedOP•2w ago

Okay I am back on the code I switched the version of gson to 2.11.0 and changed what's needed in module-info.java But now I get this error

AbuAbedOP•2w ago

@dan1st Nevermind Apparently I had to build the project to remove the error But when I run the project now I get this error instead

AbuAbedOP•2w ago

message.txt

dan1st•2w ago

Could not find or load main class com.coursework2.hybrid04.App in module com.coursework2.hybrid04

seems like your main class is wrong

AbuAbedOP•2w ago

package com.coursework2.hybrid04;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class HyBrid04 extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("HyBrid.fxml"));
        
        Scene scene = new Scene(root);
        scene.getStylesheets().add(HyBrid04.class.getResource("Style.css").toExternalForm());

        primaryStage.setScene(scene);
        primaryStage.setTitle("HyBrid04");
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

package com.coursework2.hybrid04;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class HyBrid04 extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("HyBrid.fxml"));
        
        Scene scene = new Scene(root);
        scene.getStylesheets().add(HyBrid04.class.getResource("Style.css").toExternalForm());

        primaryStage.setScene(scene);
        primaryStage.setTitle("HyBrid04");
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

This is the java file that includes the main class I also checked out HyBrid.fxml it seems that errors there exist too

dan1st•2w ago

Can you show your pom.xml? Your main class is HyBrid04 but it expects the name App

AbuAbedOP•2w ago

message.txt

dan1st•2w ago

<mainClass>com.coursework2.hybrid04.App</mainClass>

AbuAbedOP•2w ago

do I remove the .App?

dan1st•2w ago

change it to <mainClass>com.coursework2.hybrid04.HyBrid04</mainClass>

AbuAbedOP•2w ago

message.txt

AbuAbedOP•2w ago

I assume that these are errors related to HyBrid.fxml

dan1st•2w ago

What is line 12 of HyBrid04? I think it doesn't find the FXML file

AbuAbedOP•2w ago

Parent root = FXMLLoader.load(getClass().getResource("HyBrid.fxml"));

dan1st•2w ago

getResource("HyBrid.fxml") returns null because HyBrid.fxml doesn't exist in the same directory as the class or in the corresponding directory it would need to be in src/main/resources

AbuAbedOP•2w ago

This is how it is

dan1st•2w ago

Is there a resource folder? src/main/resources preferably? similar to "Source packages" but next to it

AbuAbedOP•2w ago

There isn't

dan1st•2w ago

Can you show he full project tree/files?

AbuAbedOP•2w ago

dan1st•2w ago

expand "Project Files" What's there?

AbuAbedOP•2w ago

bottom

dan1st•2w ago

Can you create a new directory src/main/resources? You can also do it outside of NetBeans

AbuAbedOP•2w ago

Alright give me a second Okay I am back I noticed the directory follows under the 'Other sources' folder

AbuAbedOP•2w ago

primary.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.layout.VBox?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.Button?>
<?import javafx.geometry.Insets?>

<VBox alignment="CENTER" spacing="20.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.coursework2.hybrid04.PrimaryController">
   <children>
      <Label text="Primary View" />
      <Button fx:id="primaryButton" text="Switch to Secondary View" onAction="#switchToSecondary"/>
   </children>
   <padding>
      <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
   </padding>
</VBox>

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.layout.VBox?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.Button?>
<?import javafx.geometry.Insets?>

<VBox alignment="CENTER" spacing="20.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.coursework2.hybrid04.PrimaryController">
   <children>
      <Label text="Primary View" />
      <Button fx:id="primaryButton" text="Switch to Secondary View" onAction="#switchToSecondary"/>
   </children>
   <padding>
      <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
   </padding>
</VBox>

secondary.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.layout.VBox?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.Button?>
<?import javafx.geometry.Insets?>

<VBox alignment="CENTER" spacing="20.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.coursework2.hybrid04.SecondaryController">
    <children>
        <Label text="Secondary View" />
        <Button fx:id="secondaryButton" text="Switch to Primary View" onAction="#switchToPrimary" />
    </children>
    <padding>
        <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
    </padding>
</VBox>

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.layout.VBox?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.Button?>
<?import javafx.geometry.Insets?>

<VBox alignment="CENTER" spacing="20.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.coursework2.hybrid04.SecondaryController">
    <children>
        <Label text="Secondary View" />
        <Button fx:id="secondaryButton" text="Switch to Primary View" onAction="#switchToPrimary" />
    </children>
    <padding>
        <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
    </padding>
</VBox>

Both of which have the error after calling fx:controller

AbuAbedOP•2w ago

@dan1st When I imported the project to a Maven project, these files weren't there to begin with Are they necessary to keep?

dan1st•2w ago

How did you create that? Note that it should be com/courseworks2/hybrid04

AbuAbedOP•2w ago

I didn't create that I assume it was made when I created the project

dan1st•2w ago

if the FXML references a controller class, it should exist then it's probably fine

AbuAbedOP•2w ago

So do I leave the primary and secondary fxml files alone?

dan1st•2w ago

? I meant if it reference a controller, you need to have it

AbuAbedOP•2w ago

I only have one controller class which is HyBridController.java

dan1st•2w ago

well your secondary FXML references a controller Do you need controller logic for it?

AbuAbedOP•2w ago

I believe that I only need one controller again I wasn't aware about the existence of these fxml files they are not included in the initial project I think that deleting them would fix the problems

dan1st•2w ago

you'll notice if you need another controller

AbuAbedOP•2w ago

That may be but as far as I am concerned I have one controller I will Javadoc the files

dan1st•2w ago

So what error do you currently have?

AbuAbedOP•2w ago

The primary and secondary FXMLs as I have shown above and some errors with HyBrid.fxml

dan1st•2w ago

yeah but what happens when you run it?

AbuAbedOP•2w ago

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.geometry.Insets?>
<?import javafx.scene.chart.BarChart?>
<?import javafx.scene.chart.CategoryAxis?>
<?import javafx.scene.chart.NumberAxis?>
<?import javafx.scene.control.TableColumn?>
<?import javafx.scene.control.TableView?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.layout.VBox?>

<AnchorPane id="" fx:id="AnchorPane1" prefHeight="-1.0" prefWidth="-1.0" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1" fx:controller="hybrid.HyBridController">
   <children>
      <VBox spacing="10.0">
         <padding>
            <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
         </padding>
         <children>
            <HBox fx:id="HBox1" spacing="10.0">
               <padding>
                  <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
               </padding>
            </HBox>
            <BarChart fx:id="BarChart1" animated="false" title="Courses &amp; Students">
              <xAxis>
                <CategoryAxis label="Courses" side="BOTTOM" fx:id="xAxis" />
              </xAxis>
              <yAxis>
                <NumberAxis fx:id="yAxis" label="Students" side="LEFT" />
              </yAxis>
            </BarChart>
            <TableView fx:id="TableView1">
               <columns>
                  <TableColumn fx:id="TableColumn1" maxWidth="-1.0" minWidth="75.0" prefWidth="-1.0" text="Year" />
                  <TableColumn fx:id="TableColumn2" maxWidth="-1.0" minWidth="75.0" prefWidth="-1.0" text="Course" />
                  <TableColumn fx:id="TableColumn3" maxWidth="-1.0" minWidth="75.0" prefWidth="-1.0" text="Quantity" />
               </columns>
            </TableView>
         </children>
      </VBox>
   </children>
</AnchorPane>

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.geometry.Insets?>
<?import javafx.scene.chart.BarChart?>
<?import javafx.scene.chart.CategoryAxis?>
<?import javafx.scene.chart.NumberAxis?>
<?import javafx.scene.control.TableColumn?>
<?import javafx.scene.control.TableView?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.layout.VBox?>

<AnchorPane id="" fx:id="AnchorPane1" prefHeight="-1.0" prefWidth="-1.0" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1" fx:controller="hybrid.HyBridController">
   <children>
      <VBox spacing="10.0">
         <padding>
            <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
         </padding>
         <children>
            <HBox fx:id="HBox1" spacing="10.0">
               <padding>
                  <Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
               </padding>
            </HBox>
            <BarChart fx:id="BarChart1" animated="false" title="Courses &amp; Students">
              <xAxis>
                <CategoryAxis label="Courses" side="BOTTOM" fx:id="xAxis" />
              </xAxis>
              <yAxis>
                <NumberAxis fx:id="yAxis" label="Students" side="LEFT" />
              </yAxis>
            </BarChart>
            <TableView fx:id="TableView1">
               <columns>
                  <TableColumn fx:id="TableColumn1" maxWidth="-1.0" minWidth="75.0" prefWidth="-1.0" text="Year" />
                  <TableColumn fx:id="TableColumn2" maxWidth="-1.0" minWidth="75.0" prefWidth="-1.0" text="Course" />
                  <TableColumn fx:id="TableColumn3" maxWidth="-1.0" minWidth="75.0" prefWidth="-1.0" text="Quantity" />
               </columns>
            </TableView>
         </children>
      </VBox>
   </children>
</AnchorPane>

Give me a second

AbuAbedOP•2w ago

message.txt

AbuAbedOP•2w ago

This is what I get

AbuAbedOP•2w ago

Here's an extension

message.txt

dan1st•2w ago

seems like the issue is the FXML file is still not found

AbuAbedOP•2w ago

HyBrid.fxml? Do I move it to the package under src?

dan1st•2w ago

You are trying to access HyBrid.fxml but you have a primary.fxml at least here I don't see a HyBrid.fxml

AbuAbedOP•2w ago

This is the tree again

AbuAbedOP•2w ago

I will move it

dan1st•2w ago

FXML and CSS files belong in src/main/resources Java files in src/main/java (i.e. "Source Packages")

AbuAbedOP•2w ago

That's good to know

AbuAbedOP•2w ago

message.txt

AbuAbedOP•2w ago

How do I comment in .fxml files? I need to blank out the primary and secondary files

dan1st•2w ago

AbuAbedOP•2w ago

This is in HyBrid.fxml

AbuAbedOP•2w ago

This is the HyBrid.fxml code

dan1st•2w ago

it's com.coursework2.hybrid04.HyBridController Is there any reason you are using JavaFX 13 in your pom.xml?

AbuAbedOP•2w ago

No, should I change that to 22?

dan1st•2w ago

probably, yes Since you moved the files now, are you getting a different error when running the application?

AbuAbedOP•2w ago

Nope

AbuAbedOP•2w ago

The application runs fine now

dan1st•2w ago

AbuAbedOP•2w ago

Don't mind the missing data Ok, hopefully I don't run into these types of issues anymore Am I able to keep this post open in case I run into more problems later?

dan1st•2w ago

yes

AbuAbedOP•2w ago

So the app opens just fine but this error is personally bugging me

AbuAbedOP•2w ago

this is in HyBrid.fxml I noticed it while changing variables and parameters Should this be of any concern? @dan1st

dan1st•2w ago

you could try maing sure you are specifying the correct JavaFX version in the FXML file

dan1st•2w ago

it seems like you are not the only one experiencing that and it still works: https://stackoverflow.com/a/76965337/10871900

Stack Overflow

JavaFX LineChart Error: "Instances of javafx.scene.chart.LineChart ...

I am in the process of moving my JavaFX project from Java 8 to Java 11, JavaFX 17 for the past week or so. I also moved from Scenebuilder 8.5 to Scenebuilder JavaFX Version: 20.0.1. All in all it has

dan1st•2w ago

maybe there's an issue with a JavaFX plugin in NetBeans idk

JavaBot•2w ago

💤 Post marked as dormant

This post has been inactive for over 300 minutes, thus, it has been archived. If your question was not answered yet, feel free to re-open this post or create a new one. In case your post is not getting any attention, you can try to use /help ping. Warning: abusing this will result in moderative actions taken against you.

AbuAbedOP•2w ago

@dan1st Back with a new problem, so I made a new method called constructObservableList() in HyBridController.java, and I called it in the start method in HyBrid04.java, but it shows an error as the method is never created or called, and both .java files are in the same package, what should I do here?

AbuAbedOP•2w ago

I tried importing the HyBridControlle.java but that didn't seem to work

dan1st•2w ago

Are both in the same class?

AbuAbedOP•2w ago

They are not As I mentioned, constructObservableList() method is in the HybridController.java, and I am trying to call it in the start method in HyBrid04.java

dan1st•2w ago

then you need to call it using yourObjectOfTheHybridControllerClass.constructObservableList()

AbuAbedOP•2w ago

oh nvm it's the class prefix I changed the method from private to public and made it static for syntax fix

dan1st•2w ago

I hope you know what static actually means?

AbuAbedOP•2w ago

when I managed to call the method, it gave me an error that I can't call a non-static method

JavaBot•2w ago

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AbuAbedOP•2w ago

Would it be a problem if I changed it to a static method?

dan1st•2w ago

if you know what you are doing and it makes sense from an architectural perspective, no but that requires knowing what static actually does and what instance methods are

JavaBot•2w ago

Check out this StackOverflow question for details on the static keyword.

AbuAbedOP•2w ago

It shouldn't be a problem then

AbuAbedOP•2w ago

May I get an interpretation of this error?

message.txt

dan1st•2w ago

add opens com.coursework2.hybrid04 to javafx.fxml; to your module-info.java JavaFX is trying to access com.coursework2.hybrid04.Sales#Year (I guess because of that being referenced in FXML) but it is not allowed

AbuAbedOP•2w ago

I already have this in that file:

module com.coursework2.hybrid04 {
    requires javafx.controls;
    requires javafx.fxml;
    requires com.google.gson;

    opens com.coursework2.hybrid04 to javafx.fxml;
    exports com.coursework2.hybrid04;
}

module com.coursework2.hybrid04 {
    requires javafx.controls;
    requires javafx.fxml;
    requires com.google.gson;

    opens com.coursework2.hybrid04 to javafx.fxml;
    exports com.coursework2.hybrid04;
}

dan1st•2w ago

Ah It's about gson add opens com.coursework2.hybrid04 to com.google.gson;

AbuAbedOP•2w ago

What's the correct syntax?

dan1st•2w ago

ah it might be opens com.coursework2.hybrid04 to com.google.gson, javafx.fxml; or something like that so both in one statement

AbuAbedOP•2w ago

Alright that fixed it but now running the code seems to crash the application as soon as it starts no errors in the output this time

dan1st•2w ago

debug it? btw you can also inspect the code generated by the annotation processor

AbuAbedOP•2w ago

where can I find the annotation processor?

dan1st•2w ago

what do you mean with finding it?

AbuAbedOP•2w ago

I tried debugging the code but I still can't find the issue, both the log and debugger console are devoid of errors

dan1st•2w ago

what exactly happens?

AbuAbedOP•2w ago

I will send a screen recording nevermind I will explain it in detail When I run the app after 7 seconds, it opens the JavaFX application window which should show graphs and a table, but in a split second the app window closes itself without displaying anything

dan1st•2w ago

Did you add a breakpoint in the handler of that button?

AbuAbedOP•2w ago

I added a breakpoint to the main method, which didn't show me anything that resembles an error. But when I add the breakpoint to the start method in HyBrid04.java, I get this error in the debugger console:

Not able to submit breakpoint LineBreakpoint HyBrid04.java : 33, reason: No executable location available at line 33 in class com.coursework2.hybrid04.HyBrid04.

dan1st•2w ago

What is line 33? Also why in the start() method?

AbuAbedOP•2w ago

line 33 is the calling of the start() method and I thought it might indicate something

dan1st•2w ago

Why are you setting a breakpoint there? It starts correctly, right?

AbuAbedOP•2w ago

the application window does start, yes

dan1st•2w ago

then add the breakpoint in the handler of the button that causes the crash/window to close itself

AbuAbedOP•2w ago

I don't have any button that closes the window Here's HyBrid04.java which contains the main() method

AbuAbedOP•2w ago

message.txt

dan1st•2w ago

(the message about annotation processors was me confusing this with another question)

AbuAbedOP•2w ago

dan1st•2w ago

Didn't you say something about the app window closing when doing something?

AbuAbedOP•2w ago

I don't need to do anything for it to close, it just closes by itself

dan1st•2w ago

I don't see any GUI/JavaFX stuff here Is this the issue?

AbuAbedOP•2w ago

yes

AbuAbedOP•2w ago

Here's the start() method

message.txt

dan1st•2w ago

So what's the thing that takes 7 seconds? Does it instantly close after these 7 seconds?

AbuAbedOP•2w ago

Yes, and the 7 seconds is retrieving data from a web service

dan1st•2w ago

Where does that happen? What about adding a breakpoint right after that happens?

AbuAbedOP•2w ago

It happens in the main method, and I added a breakpoint to try and see when the application launches but with debugging the window never shows up

dan1st•2w ago

How does the JavaFX application interact with the main method?

AbuAbedOP•2w ago

In the main method, before opening the app window, the code retrieves data and builds the code, then once that's done there's a series of lines printed in the console and then the application window opens

AbuAbedOP•2w ago

This is what the console gives me

message.txt

dan1st•2w ago

oh there is a launch(args)

AbuAbedOP•2w ago

Yes

dan1st•2w ago

Is the main method declared in HyBrid04?

AbuAbedOP•2w ago

Yes

dan1st•2w ago

Is start() executed? When you debug start(), does it execute the primaryStage.show();?

AbuAbedOP•2w ago

No, when I debug start(), the debugger console gives me this:

Not able to submit breakpoint LineBreakpoint HyBrid04.java : 33, reason: No executable location available at line 33 in class com.coursework2.hybrid04.HyBrid04.

Invalid LineBreakpoint HyBrid04.java : 33 And it skips the debugging of that method and continues running the application. Line 33 is where start() is

dan1st•2w ago

btw regarding the error you got with your Discord message being blocked - that one should be fixed now What exactly is line 33? Is it HyBridController.constructSales();

AbuAbedOP•2w ago

No, it's public void start(Stage primaryStage) throws Exception {

dan1st•2w ago

btw you have Platform.exit(); in your application. You are aware that this just closes the application, right? you might want to try adding the breakpoint in the actual first line of actual code in that method

AbuAbedOP•2w ago

Okay I removed Platform.exit(); and the app window won't close itself anymore fixed the issue

JavaBot•2w ago

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