RunnableImplObject.java revision 1088:7e62d98d4625 
1/*
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30 */
31
32import javax.script.Invocable;
33import javax.script.ScriptEngine;
34import javax.script.ScriptEngineManager;
35
36@SuppressWarnings("javadoc")
37public class RunnableImplObject {
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