ScriptEngineTask that displays available Java Script Engines

ScriptEngineTask.groovy

import javax.script.*

import org.gradle.api.Plugin
import org.gradle.api.Project
import org.gradle.api.DefaultTask
import org.gradle.api.tasks.TaskAction

class ScriptEngineTask extends DefaultTask {

    @TaskAction
    def testScriptEngines() {
  	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);
		
		}
    }

}