1 /* 2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * - Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 11 * - Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * - Neither the name of Oracle nor the names of its 16 * contributors may be used to endorse or promote products derived 17 * from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 20 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 import javax.script.Invocable; 33 import javax.script.ScriptEngine; 34 import javax.script.ScriptEngineManager; 35 36 @SuppressWarnings("javadoc") 37 public class RunnableImplObject { main(final String[] args)38 public static void main(final String[] args) throws Exception { 39 final ScriptEngineManager manager = new ScriptEngineManager(); 40 final ScriptEngine engine = manager.getEngineByName("nashorn"); 41 42 // JavaScript code in a String 43 final String script = "var obj = new Object(); obj.run = function() { print('run method called'); }"; 44 45 // evaluate script 46 engine.eval(script); 47 48 // get script object on which we want to implement the interface with 49 final Object obj = engine.get("obj"); 50 51 final Invocable inv = (Invocable) engine; 52 53 // get Runnable interface object from engine. This interface methods 54 // are implemented by script methods of object 'obj' 55 final Runnable r = inv.getInterface(obj, Runnable.class); 56 57 // start a new thread that runs the script implemented 58 // runnable interface 59 final Thread th = new Thread(r); 60 th.start(); 61 th.join(); 62 } 63 } 64