Problem with import and using SwingFXUtils in gradle project - gradle

Question

I'm very new to gradle and javaFx.
I'm working on a gradle project (not mine) and I need to import SwingFXUtils to make some operations.
Importing it into the java file:
import javafx.embed.swing.SwingFXUtils;
cause the error: "Cannot resolve symbold SwingFXUtils".
I tried to add it to java-modules.java file
requires javafx.embed.swing;
but it is not recognized and I'm having the error message: "Module not found:javafx.embed.swing"
then, I updated my build.gradle for the missing module: like this:
plugins {
id 'application'
id 'org.beryx.jlink' version '2.19.0'
id 'com.google.osdetector' version '1.6.2'
}
repositories {
flatDir {
dirs "libs"
}
jcenter()
maven { url "https://maven.geotoolkit.org/" }
mavenCentral()
}
ext {
toolName = 'my project'
toolVersion = '1.0.0'
mainModuleName = 'com.myproject'
mainClassName = 'com.myproject.DcTool'
jfxVersion = '14.0.1'
pdfboxVersion = '2.0.27'
platform = osdetector.os == 'osx'?'mac':osdetector.os =='windows'?'win':osdetector.os
fixWayland = platform == 'mac' ? '' : platform == 'win' ? '' : '-Djdk.gtk.version=2'
}
version = "$toolVersion"
// Project dependencies.
dependencies {
compileOnly "org.jetbrains:annotations:19.0.0"
implementation "org.openjfx:javafx-base:$jfxVersion:$platform"
implementation "org.openjfx:javafx-graphics:$jfxVersion:$platform"
implementation "org.openjfx:javafx-controls:$jfxVersion:$platform"
implementation "org.openjfx:javafx-fxml:$jfxVersion:$platform"
implementation "com.fazecast:jSerialComm:2.6.2"
implementation "ch.qos.logback:logback-classic:1.3.0-alpha4"
implementation "de.skuzzle:semantic-version:2.1.0"
implementation "info.picocli:picocli:4.3.2"
annotationProcessor "info.picocli:picocli-codegen:4.3.2"
implementation "org.apache.pdfbox:pdfbox:${pdfboxVersion}"
implementation "org.apache.pdfbox:preflight:${pdfboxVersion}"
implementation "com.fasterxml.jackson.jr:jackson-jr-objects:2.11.0"
implementation group: 'org.openjfx', name: 'javafx-swing', version: '11-ea+24'
}
java {
modularity.inferModulePath = true
}
application {
mainModule.set("$mainModuleName")
mainClass.set("$mainClassName")
applicationDefaultJvmArgs = [
"-Dfile.encoding=UTF-8",
]
}
tasks.withType(JavaCompile) {
doFirst {
options.compilerArgs = [
'--module-path', classpath.asPath
]
classpath = files()
}
sourceCompatibility = JavaVersion.VERSION_11
targetCompatibility = JavaVersion.VERSION_14
options.encoding = "UTF-8"
options.javaModuleVersion.set("$toolVersion")
options.javaModuleMainClass.set("$mainClassName")
}
run {
doFirst {
jvmArgs = [
"--module-path", classpath.asPath,
'--patch-module', "$mainModuleName=" + files(sourceSets.main.output.resourcesDir).asPath,
"--module", "$mainModuleName/$mainClassName"
]
jvmArgs += application.applicationDefaultJvmArgs
classpath = files()
}
doLast {
args = []
}
}
jar {
manifest {
attributes(
'Main-Class': "$mainClassName"
)
}
}
JAVA_HOME=$(/usr/libexec/java_home)
jlink {
moduleName.set("$mainModuleName")
mainClass.set("$mainClassName")
addOptions(
'--bind-services',
'--no-header-files',
'--no-man-pages',
'--strip-debug',
'--compress', '2')
launcher {
name = "$toolName"
jvmArgs += application.applicationDefaultJvmArgs
}
}
I also tried to download jars of SwingFx and add them in a "libs" folder into the project but I have no result and compiler doesn't find modules I need.
What can I do to make it find this module?
Thank you for your help.