RunnableImpl.java revision 1088:7e62d98d4625 
1/*
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3 *
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10 *
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30 */
31
32import javax.script.Invocable;
33import javax.script.ScriptEngine;
34import javax.script.ScriptEngineManager;
35
36@SuppressWarnings("javadoc")
37public class RunnableImpl {
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 = "function run() { print('run called'); }";
44
45        // evaluate script
46        engine.eval(script);
47
48        final Invocable inv = (Invocable) engine;
49
50        // get Runnable interface object from engine. This interface methods
51        // are implemented by script functions with the matching name.
52        final Runnable r = inv.getInterface(Runnable.class);
53
54        // start a new thread that runs the script implemented
55        // runnable interface
56        final Thread th = new Thread(r);
57        th.start();
58        th.join();
59    }
60}
61