Mon, 17 Apr 2017 11:46:11 -0700
Added tag jdk8u141-b05 for changeset f7fc5fc0e2cb
1 #// Usage: jjs -scripting -cp . jsobject.js
3 /*
4 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * - Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * - Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * - Neither the name of Oracle nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
22 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
25 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
28 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
29 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
34 // This sample demonstrats how to expose a
35 // script friendly object from your java code
36 // by implementing jdk.nashorn.api.scripting.JSObject
38 // compile the java program
39 `javac BufferArray.java`;
41 // print error, if any and exit
42 if ($ERR != '') {
43 print($ERR);
44 exit($EXIT);
45 }
47 // create BufferArray
48 var BufferArray = Java.type("BufferArray");
49 var bb = new BufferArray(10);
51 // 'magic' methods called to retrieve set/get
52 // properties on BufferArray instance
53 var len = bb.length;
54 print("bb.length = " + len)
55 for (var i = 0; i < len; i++) {
56 bb[i] = i*i;
57 }
59 for (var i = 0; i < len; i++) {
60 print(bb[i]);
61 }
63 // get underlying buffer by calling a method
64 // on BufferArray magic object
66 // 'buf' is a function member
67 print(typeof bb.buf);
68 var buf = bb.buf();
70 // use retrieved underlying nio buffer
71 var cap = buf.capacity();
72 print("buf.capacity() = " + cap);
73 for (var i = 0; i < cap; i++) {
74 print(buf.get(i));
75 }