#// Usage: jjs -scripting -cp . jsobject.js/* * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * 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. * * - 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, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */// This sample demonstrats how to expose a// script friendly object from your java code// by implementing jdk.nashorn.api.scripting.JSObject// compile the java program`javac BufferArray.java`;// print error, if any and exitif ($ERR != '') { print($ERR); exit($EXIT);}// create BufferArrayvar BufferArray = Java.type("BufferArray");var bb = new BufferArray(10);// 'magic' methods called to retrieve set/get// properties on BufferArray instancevar len = bb.length;print("bb.length = " + len)for (var i = 0; i < len; i++) { bb[i] = i*i;}for (var i = 0; i < len; i++) { print(bb[i]);}// get underlying buffer by calling a method// on BufferArray magic object// 'buf' is a function memberprint(typeof bb.buf);var buf = bb.buf();// use retrieved underlying nio buffervar cap = buf.capacity();print("buf.capacity() = " + cap);for (var i = 0; i < cap; i++) { print(buf.get(i));}