JAR file won't run

Question

I recently wrote a simple calculator using Maven and JavaFX, nothing special. The code runs without problems, all operations occur without problems - I try to compile the jar file, I compile it, but when I try to run it, nothing happens, the process does not even appear in the manager.

I tried to run through the console, if the versions match JDK and JRE are the same, I attached the screen. At startup, it gives such an error, I tried to fix it, googled it, tried everything, there were no problems with connecting JavaFX and there weren’t. Then it knocks out an error that it cannot find the main class, it also knocked out an error about the unknown location of the manifest file. I corrected all these mistakes and did everything that was required of me - as a result, absolutely nothing. After one mistake another, after another a third, then something else pops up and in the end, I don’t understand anything.

open jar in cmd

version jdk jre

main class - application

package com.example.simplecalculator;

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

import java.io.IOException;

public class HelloApplication extends Application {
    @Override
    public void start(Stage stage) throws IOException {
        FXMLLoader fxmlLoader = new FXMLLoader(HelloApplication.class.getResource("hello-view.fxml"));
        Scene scene = new Scene(fxmlLoader.load(), 322, 430);
        stage.setTitle("Калькулятор");
        stage.setScene(scene);
        stage.setResizable(false);
        stage.setAlwaysOnTop(true);
        stage.show();
    }

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

fxml file

controller

package com.example.simplecalculator;

import javafx.event.Event;
import javafx.fxml.FXML;
import javafx.scene.control.TextField;
import javafx.scene.text.Text;

public class HelloController {

    public int num;
    public int result;
    static int calculation;

    @FXML
    TextField calculateField;
    @FXML
    Text textMessage;
    @FXML
    Text textMessage2;

    @FXML
    public void operation(){
        switch (calculation) {
            case 1 -> { // +
                result = num + Integer.parseInt(calculateField.getText());
                calculateField.setText(Integer.toString(result));
            }
            case 2 -> { // -
                result = num - Integer.parseInt(calculateField.getText());
                calculateField.setText(Integer.toString(result));
            }
            case 3 -> { // *
                result = num * Integer.parseInt(calculateField.getText());
                calculateField.setText(Integer.toString(result));
            }
            case 4 -> { // /
                result = num / Integer.parseInt(calculateField.getText());
                calculateField.setText(Integer.toString(result));
            }
        }
    }

    @FXML
    public void ClearMethod(){
        calculateField.clear();
    }

    public void initialize(){
        calculateField.setOnKeyTyped(Event::consume);
        calculateField.setOnKeyPressed(Event::consume);
    }

    @FXML
    public void pNumbers(){
        String check = calculateField.getText();
        if(check.length() >=  11){
            textMessage.setText("Слишком большое число!");
            return;
        }
        textMessage.setText("Результат:");
    }

    @FXML
    protected void OneButtonClick() {
        calculateField.setText(calculateField.getText() + "1");
    }

    @FXML
    protected void SecondButtonClick() {
        calculateField.setText(calculateField.getText() + "2");
    }

    @FXML
    protected void ThirdButtonClick() {
        calculateField.setText(calculateField.getText() + "3");
    }

    @FXML
    protected void FourthButtonClick() {
        calculateField.setText(calculateField.getText() + "4");

    }

    @FXML
    protected void FifthButtonClick() {
        calculateField.setText(calculateField.getText() + "5");

    }

    @FXML
    protected void SixthButtonClick() {
        calculateField.setText(calculateField.getText() + "6");

    }

    @FXML
    protected void SeventhButtonClick() {
        calculateField.setText(calculateField.getText() + "7");

    }

    @FXML
    protected void EigthButtonClick() {
        calculateField.setText(calculateField.getText() + "8");

    }

    @FXML
    protected void NinthButtonClick() {
        calculateField.setText(calculateField.getText() + "9");

    }

    @FXML
    protected void ZeroButtonClick() {
        calculateField.setText(calculateField.getText() + "0");

    }

    @FXML
    protected void CButtonClick() {
        ClearMethod();
        textMessage.setText("");
        textMessage.setVisible(true);
        textMessage2.setVisible(false);
    }

    @FXML
    protected void deleteButton() {
        String value = calculateField.getText();
        int length = value.length();

        if(length > 0){
            StringBuilder builder = new StringBuilder(value);
            builder.deleteCharAt(length-1);
            calculateField.setText(builder.toString());
        }
    }

    @FXML
    protected void plusButton() {
        pNumbers();
        try {
            num = Integer.parseInt(calculateField.getText());
            calculation = 1;
            calculateField.setText("");
            textMessage.setText(num + " +");
        } catch(NumberFormatException e){
            textMessage.setVisible(false);
            textMessage2.setText("Макс. значение для ввода равно 2,147,483,647! 
 Измените число!");
            return;
        }
    }

    @FXML
    protected void minusButton(){
        pNumbers();
        try {
            num = Integer.parseInt(calculateField.getText());
            calculation = 2;
            calculateField.setText("");
            textMessage.setText(num + " -");
        } catch(NumberFormatException e){
            textMessage.setVisible(false);
            textMessage2.setText("Макс. значение для ввода равно 2,147,483,647! 
 Измените число!");
            return;
        }
    }

    @FXML
    protected void multiplicationButton(){
        pNumbers();
        try {
            num = Integer.parseInt(calculateField.getText());
            calculation = 3;
            calculateField.setText("");
            textMessage.setText(num + " *");
        } catch(NumberFormatException e){
            textMessage.setVisible(false);
            textMessage2.setText("Макс. значение для ввода равно 2,147,483,647! 
 Измените число!");
            return;
        }
    }

    @FXML
    protected void segmentationButton() {
        pNumbers();
        try {
            num = Integer.parseInt(calculateField.getText());
            calculation = 4;
            calculateField.setText("");
            textMessage.setText(num + " /");
        } catch(NumberFormatException e){
            textMessage.setVisible(false);
            textMessage2.setText("Макс. значение для ввода равно 2,147,483,647! 
 Измените число!");
            return;
        }
    }

    @FXML
    protected void helpButton() {
        pNumbers();
    }

    @FXML
    protected void Result(){
        operation();
        textMessage.setText("Результат: ");
    }
}

xml-file



    4.0.0

    com.example
    SimpleCalculator
    1.0-SNAPSHOT
    SimpleCalculator

    
        UTF-8
        5.8.2
    

    
        
            org.openjfx
            javafx-controls
            18
        
        
            org.openjfx
            javafx-fxml
            18
        

        
            org.junit.jupiter
            junit-jupiter-api
            ${junit.version}
            test
        
        
            org.junit.jupiter
            junit-jupiter-engine
            ${junit.version}
            test
        
    

    
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                3.10.1
                
                    18
                    18
                
            
            
                org.openjfx
                javafx-maven-plugin
                0.0.8
                
                    
                        
                        default-cli
                        
                            com.example.simplecalculator/com.example.simplecalculator.HelloApplication
                            
                            app
                            app
                            app
                            true
                            true
                            true

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