nashorn/docs/source/javaarray.js
author ykantser
Mon, 20 Jul 2015 13:12:00 +0200
changeset 31906 398dc2ff188e
parent 26067 b32ccc3a76c9
permissions -rw-r--r--
8037957: [TEST_BUG] javax/management/mxbean/LeakTest.java misses MerlinMXBean & TigerMXBean in @run build tag Reviewed-by: jbachorik

/*
 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
 *
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 * 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,
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 */

// create Java String array of 5 elements
var StringArray = Java.type("java.lang.String[]");
var a = new StringArray(5);

// Accessing elements and length access is by usual Java syntax
a[0] = "scripting is great!";
print(a.length);
print(a[0]);

// convert a script array to Java array
var anArray = [1, "13", false];
var javaIntArray = Java.to(anArray, "int[]");
print(javaIntArray[0]);// prints 1
print(javaIntArray[1]); // prints 13, as string "13" was converted to number 13 as per ECMAScript ToNumber conversion
print(javaIntArray[2]);// prints 0, as boolean false was converted to number 0 as per ECMAScript ToNumber conversion

// convert a Java array to a JavaScript array
var File = Java.type("java.io.File");
var listCurDir = new File(".").listFiles();
var jsList = Java.from(listCurDir);
print(jsList);