Java tutorial
import java.io.FileReader; import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; public class Main { public static void main(String[] args) { ScriptEngineManager manager = new ScriptEngineManager(); ScriptEngine engine = manager.getEngineByName("js"); try { FileReader reader = new FileReader("yourFile.js"); engine.eval(reader); reader.close(); } catch (Exception e) { e.printStackTrace(); } } }