Gradle build script displaying Java ScriptEngines

build.gradle

import ScriptEngineTask
import javax.script.*

buildscript {
  repositories {
		mavenCentral()
	}
	dependencies {
		classpath 'org.jruby:jruby-complete:1.7.4'
	}
}

task testScriptEngineViaImportedTask(type: ScriptEngineTask) {
	
}

ScriptEngineManager mgr = new ScriptEngineManager();
List<ScriptEngineFactory> factories = mgr.getEngineFactories();

for (ScriptEngineFactory factory : factories) {

	System.out.println("ScriptEngineFactory Info");

	String engName = factory.getEngineName();
	String engVersion = factory.getEngineVersion();
	String langName = factory.getLanguageName();
	String langVersion = factory.getLanguageVersion();

	System.out.printf("\tScript Engine: %s (%s)\n", engName, engVersion);

	List<String> engNames = factory.getNames();
	for(String name : engNames) {
		System.out.printf("\tEngine Alias: %s\n", name);
	}

	System.out.printf("\tLanguage: %s (%s)\n", langName, langVersion);
	
}