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 InvokeScriptMethod {

    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. This code defines a script object 'obj'

    43         // with one method called 'hello'.

    44         final String script = "var obj = new Object(); obj.hello = function(name) { print('Hello, ' + name); }";

    45         // evaluate script

    46         engine.eval(script);

    47 

    48         // javax.script.Invocable is an optional interface.

    49         // Check whether your script engine implements or not!

    50         // Note that the JavaScript engine implements Invocable interface.

    51         final Invocable inv = (Invocable) engine;

    52 

    53         // get script object on which we want to call the method

    54         final Object obj = engine.get("obj");

    55 

    56         // invoke the method named "hello" on the script object "obj"

    57         inv.invokeMethod(obj, "hello", "Script Method !!" );

    58     }

    59 }