Mercurial > jdk8-mips64-public > nashorn / file revision

 #// Usage: jjs -scripting interface2.js

 /*

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  *     notice, this list of conditions and the following disclaimer.

  * 

  *   - Redistributions in binary form must reproduce the above copyright

  *     notice, this list of conditions and the following disclaimer in the

  *     documentation and/or other materials provided with the distribution.

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  *   - Neither the name of Oracle nor the names of its

  *     contributors may be used to endorse or promote products derived

  *     from this software without specific prior written permission.

  * 

  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

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 // Simple example demonstrating how to implement java interface

 // whose methods are backed by script methods of a script object

 var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");

 // create manager

 var manager = new ScriptEngineManager();

 // create engine

 var engine = manager.getEngineByName("js");

 // eval code - too many script escapes?

 // use heredoc !

 engine.eval(<<CODE

   var obj = {

     run: function() {

         print("I am run method of 'obj'");

     }

   };

 CODE);

 // create Java interface object whose methods are

 // implemented by script methods of a script object

 // This is from javax.script.Invocable. But we are

 // in JS world, don't worry about types :)

 var Runnable = Java.type("java.lang.Runnable");

 var scriptObj = engine.get("obj");

 var r = engine.getInterface(scriptObj, Runnable.class);

 print(r.class);

 r.run();