Bonjour ! et merci d'avance à tout ceux qui peuvent m'aider !

voilà ca doit faire plusieurs jours que je transpire et que je me bats sur ce sujet : j'ai fait ma petite appli de test sur e(fx)clipse, qui marche parfaitement, et j'essaie de créer un executable .exe pour windows.

j'utilise la version javafx-sdk-11.0.2
ma version de jdk est : jdk-14.0.2

pour compiler mon application je tente de générer mon build.xml en utilisant le fichier build.fxbuild intégré au départ à la création de mon projet javaFX sur e(fx)clipse.
j'obtiens le message d'erreur suivant lors de l'éxecution de mon fichier build.xml par Ant:

Buildfile: C:\Users\regol\eclipse-workspace\bonjour\build\build.xml
setup-staging-area:
[delete] Deleting directory C:\Users\regol\eclipse-workspace\bonjour\build\externalLibs
[delete] Deleting directory C:\Users\regol\eclipse-workspace\bonjour\build\project
[delete] Deleting directory C:\Users\regol\eclipse-workspace\bonjour\build\projectRefs
[mkdir] Created dir: C:\Users\regol\eclipse-workspace\bonjour\build\externalLibs
[copy] Copying 1 file to C:\Users\regol\eclipse-workspace\bonjour\build\externalLibs
[copy] Copying 1 file to C:\Users\regol\eclipse-workspace\bonjour\build\externalLibs
[copy] Copying 1 file to C:\Users\regol\eclipse-workspace\bonjour\build\externalLibs
[copy] Copying 1 file to C:\Users\regol\eclipse-workspace\bonjour\build\externalLibs
[copy] Copying 1 file to C:\Users\regol\eclipse-workspace\bonjour\build\externalLibs
[copy] Copying 1 file to C:\Users\regol\eclipse-workspace\bonjour\build\externalLibs
[copy] Copying 1 file to C:\Users\regol\eclipse-workspace\bonjour\build\externalLibs
[copy] Copying 1 file to C:\Users\regol\eclipse-workspace\bonjour\build\externalLibs
[mkdir] Created dir: C:\Users\regol\eclipse-workspace\bonjour\build\project
[copy] Copying 1 file to C:\Users\regol\eclipse-workspace\bonjour\build\project
[mkdir] Created dir: C:\Users\regol\eclipse-workspace\bonjour\build\projectRefs
do-compile:
[delete] Deleting directory C:\Users\regol\eclipse-workspace\bonjour\build\build
[mkdir] Created dir: C:\Users\regol\eclipse-workspace\bonjour\build\build\src
[mkdir] Created dir: C:\Users\regol\eclipse-workspace\bonjour\build\build\libs
[mkdir] Created dir: C:\Users\regol\eclipse-workspace\bonjour\build\build\classes
[copy] Copying 8 files to C:\Users\regol\eclipse-workspace\bonjour\build\build\libs
[copy] Copying 1 file to C:\Users\regol\eclipse-workspace\bonjour\build\build\src
[javac] Compiling 1 source file to C:\Users\regol\eclipse-workspace\bonjour\build\build\classes
init-fx-tasks:
[taskdef] Could not load definitions from resource com/sun/javafx/tools/ant/antlib.xml. It could not be found.
do-deploy:
[copy] Copying 8 files to C:\Users\regol\eclipse-workspace\bonjour\build\dist\libs

BUILD FAILED
C:\Users\regol\eclipse-workspace\bonjour\build\build.xml:132: Problem: failed to create task or type javafx:com.sun.javafx.tools.ant:resources
Cause: The name is undefined.
Action: Check the spelling.
Action: Check that any custom tasks/types have been declared.
Action: Check that any <presetdef>/<macrodef> declarations have taken place.
No types or tasks have been defined in this namespace yet
quelque chose m'intrigue dans mon fichier xml, il y est fait mention de deux fichier .jar que je suis incapable de trouver sur mon PC : ant-javafx.jar, et jfxrt.jar

pour info mon fichier build.xml :
Code XML : Sélectionner tout - Visualiser dans une fenêtre à part
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<?xml version="1.0" encoding="UTF-8"?>
           <project name="bonjour" default="do-deploy" basedir="."  xmlns:fx="javafx:com.sun.javafx.tools.ant">
           <target name="init-fx-tasks">
                     <path id="fxant">
                                <filelist>
                                          <file name="${java.home}\..\lib\ant-javafx.jar"/>
                                          <file name="${java.home}\lib\jfxrt.jar"/>
                                </filelist>
                     </path>
 
                     <taskdef resource="com/sun/javafx/tools/ant/antlib.xml"
                                uri="javafx:com.sun.javafx.tools.ant"
                                classpathref="fxant"/>
           </target>
           <target name="setup-staging-area">
                     <delete dir="externalLibs" />
                     <delete dir="project" />
                     <delete dir="projectRefs" />
 
                     <mkdir dir="externalLibs" />
 
                     <copy todir="externalLibs">
                                <fileset dir="C:\Program Files\Java\JFX\javafx-sdk-11.0.2\lib">
                                          <filename name="javafx.graphics.jar"/>
                                </fileset>
                     </copy>
                     <copy todir="externalLibs">
                                <fileset dir="C:\Program Files\Java\JFX\javafx-sdk-11.0.2\lib">
                                          <filename name="javafx-swt.jar"/>
                                </fileset>
                     </copy>
                     <copy todir="externalLibs">
                                <fileset dir="C:\Program Files\Java\JFX\javafx-sdk-11.0.2\lib">
                                          <filename name="javafx.web.jar"/>
                                </fileset>
                     </copy>
                     <copy todir="externalLibs">
                                <fileset dir="C:\Program Files\Java\JFX\javafx-sdk-11.0.2\lib">
                                          <filename name="javafx.fxml.jar"/>
                                </fileset>
                     </copy>
                     <copy todir="externalLibs">
                                <fileset dir="C:\Program Files\Java\JFX\javafx-sdk-11.0.2\lib">
                                          <filename name="javafx.base.jar"/>
                                </fileset>
                     </copy>
                     <copy todir="externalLibs">
                                <fileset dir="C:\Program Files\Java\JFX\javafx-sdk-11.0.2\lib">
                                          <filename name="javafx.swing.jar"/>
                                </fileset>
                     </copy>
                     <copy todir="externalLibs">
                                <fileset dir="C:\Program Files\Java\JFX\javafx-sdk-11.0.2\lib">
                                          <filename name="javafx.media.jar"/>
                                </fileset>
                     </copy>
                     <copy todir="externalLibs">
                                <fileset dir="C:\Program Files\Java\JFX\javafx-sdk-11.0.2\lib">
                                          <filename name="javafx.controls.jar"/>
                                </fileset>
                     </copy>
 
                     <mkdir dir="project" />
                     <copy todir="project">
                                <fileset dir="C:\Users\regol\eclipse-workspace\bonjour">
                                          <include name="src/**" />
                                </fileset>
                     </copy>
 
                     <mkdir dir="projectRefs" />
           </target>
           <target name='do-compile'>
                     <delete dir="build" />
                     <mkdir dir="build/src" />
                     <mkdir dir="build/libs" />
                     <mkdir dir="build/classes" />
 
                     <!-- Copy project-libs references -->
                     <copy todir="build/libs">
                                <fileset dir="externalLibs">
                                          <include name="javafx-swt.jar"/>
                                          <include name="javafx.fxml.jar"/>
                                          <include name="javafx.swing.jar"/>
                                          <include name="javafx.graphics.jar"/>
                                          <include name="javafx.base.jar"/>
                                          <include name="javafx.web.jar"/>
                                          <include name="javafx.media.jar"/>
                                          <include name="javafx.controls.jar"/>
                                </fileset>
                     </copy>
 
                     <!-- Copy project references -->
 
                     <!-- Copy project sources itself -->
                     <copy todir="build/src">
                                <fileset dir="project/src">
                                          <include name="**/*"/>
                                </fileset>
                     </copy>
 
                     <javac includeantruntime="false" source="14" target="14" srcdir="build/src" destdir="build/classes" encoding="Cp1252">
                                <classpath>
                                          <fileset dir="build/libs">
                                                     <include name="*"/>
                                          </fileset>
                                </classpath>
                     </javac>
 
                     <!-- Copy over none Java-Files -->
                     <copy todir="build/classes">
                     <fileset dir="project/src">
                                <exclude name="**/*.java"/>
                     </fileset>
                     </copy>
 
 
           </target>
           <target name="do-deploy" depends="setup-staging-area, do-compile, init-fx-tasks">
                     <delete file="dist"/>
                     <delete file="deploy" />
 
                     <mkdir dir="dist" />
                     <mkdir dir="dist/libs" />
 
                     <copy todir="dist/libs">
                                <fileset dir="externalLibs">
                                          <include name="*" />
                                </fileset>
                     </copy>
 
 
                     <fx:resources id="appRes">
                                <fx:fileset dir="dist" includes="bonjour.jar"/>
                                <fx:fileset dir="dist" includes="libs/*"/>
                     </fx:resources>
 
                     <fx:application id="fxApplication"
                                name="Main"
                                mainClass="application.Main"
                                toolkit="fx"
                     />
 
                     <mkdir dir="build/classes/META-INF" />
 
 
 
                     <fx:jar destfile="dist/bonjour.jar">
                                <fx:application refid="fxApplication"/>
                                <fileset dir="build/classes">
                                </fileset>
                                <fx:resources refid="appRes"/>
 
                                <manifest>
                                          <attribute name="Implementation-Vendor" value="politi"/>
                                          <attribute name="Implementation-Title" value="Main"/>
                                          <attribute name="Implementation-Version" value="1.0"/>
                                          <attribute name="JavaFX-Feature-Proxy" value="None"/>
                                </manifest>
                     </fx:jar>
 
                     <!-- Need to use ${basedir} because somehow the ant task is calculating the directory differently -->
                     <fx:signjar
                                keystore="juju"
                                alias="juju"
                                keypass="juju"
                                storepass="juju"
                                destDir="${basedir}/dist">
                                <fileset dir='dist'>
                                          <include name='**/*.jar' />
                                </fileset>
                     </fx:signjar>
 
                     <mkdir dir="deploy" />
                     <!-- Need to use ${basedir} because somehow the ant task is calculating the directory differently -->
                     <fx:deploy
                                embedJNLP="false"
                                extension="false"
                                width="400" height="400"
                                includeDT="false"
                                offlineAllowed="true"
                                outdir="${basedir}/deploy"
                                outfile="bonjour" nativeBundles="exe"
                                updatemode="background" >
 
                                <fx:platform basedir="${java.home}"/>
                                <fx:info title="bonjour" vendor="politi"/>
 
                                <fx:application refId="fxApplication"/>
                                <fx:resources refid="appRes"/>
                                <fx:permissions elevated="true"/>
                     </fx:deploy>
 
 
           </target>
</project>


voilà, maintenant je me demande si il ne serait pas mieux de passer par Maven pour construire mon projet Javafx ? quelle est la meilleur solution ? la plus largement utilisée ? passer par Ant et e(fx)clipse, ou construire un projet maven/javafx ?

un grand merci !