Witam,
Ściągnąłem libgtx która jest zapisana jako projekt w Gradle. Zainstalowałem wtyczkę do Netbeans i otworzyłem projekt. Wszystko ok, do czasu kiedy chciałem dodać bibliotekę lib.jar. Nie wiem jak to zrobić. W opcjach projektu nie ma opcji "dodaj lib .jar" , a gradle nie umiem kompletnie obsługiwać.

Wrzucałem lib.jar do folderu libs i dodawałem linię: ale rzucało błędami.

	compile files ('libs/RXTXcomm.jar') 
        compile fileTree(dir: 'libs', include: '*.jar') 		//lub bez

bulid.gradle[test]

buildscript {
    repositories {
        mavenCentral()
        mavenLocal()
    }
    dependencies {
    }
}

allprojects {
    apply plugin: "eclipse"
    apply plugin: "idea"

    version = '1.0'
    ext {
        appName = 'kostka'
        gdxVersion = '1.0.0'
        roboVMVersion = '0.0.11'
    }

    repositories {
        mavenLocal()
        mavenCentral()
        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
    }
}

project(":desktop") {
    apply plugin: "java"


    dependencies {
        compile project(":core") 
        compile files ('libs/RXTXcomm.jar') //--stacktrace
        //compile fileTree(dir: 'libs', include: '*.jar')
        
        
        compile "com.badlogicgames.gdx:gdx-backend-lwjgl:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
        compile "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-desktop"
        compile "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-desktop"
        compile "com.badlogicgames.gdx:gdx-tools:$gdxVersion"
    }
}

project(":core") {
    apply plugin: "java"


    dependencies {        
        compile "com.badlogicgames.gdx:gdx:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-box2d:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-freetype:$gdxVersion"
    }
}

tasks.eclipse.doLast {
    delete ".project"
}

bulid.gradle[desktop]

apply plugin: "java"

sourceCompatibility = 1.6
sourceSets.main.java.srcDirs = [ "src/" ]

project.ext.mainClassName = "com.mygdx.game.desktop.DesktopLauncher"
project.ext.assetsDir = new File("../core/assets");

task run(dependsOn: classes, type: JavaExec) {
    main = project.mainClassName
    classpath = sourceSets.main.runtimeClasspath
    standardInput = System.in
    workingDir = project.assetsDir
    ignoreExitValue = true
}

task dist(type: Jar) {
    from files(sourceSets.main.output.classesDir)
    from files(sourceSets.main.output.resourcesDir)
    from {configurations.compile.collect {zipTree(it)}}
    from files(project.assetsDir);
 
    manifest {
        attributes 'Main-Class': project.mainClassName
    }
}

dist.dependsOn classes

eclipse {
    project {
        name = appName + "-desktop"
        linkedResource name: 'assets', type: '2', location: 'PARENT-1-PROJECT_LOC/core/assets'
    }
}

task afterEclipseImport(description: "Post processing after project generation", group: "IDE") {
  doLast {
    def classpath = new XmlParser().parse(file(".classpath"))
    new Node(classpath, "classpathentry", [ kind: 'src', path: 'assets' ]);
    def writer = new FileWriter(file(".classpath"))
    def printer = new XmlNodePrinter(new PrintWriter(writer))
    printer.setPreserveWhitespace(true)
    printer.print(classpath)
  }
}

user image

Proszę o pomoc.