author | erikj |
Tue, 12 Sep 2017 19:03:39 +0200 | |
changeset 47216 | 71c04702a3d5 |
parent 26067 | nashorn/docs/source/javaarray.js@b32ccc3a76c9 |
permissions | -rw-r--r-- |
16212
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
1 |
/* |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
2 |
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
26067
b32ccc3a76c9
8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents:
17758
diff
changeset
|
3 |
* |
16212
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
4 |
* Redistribution and use in source and binary forms, with or without |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
5 |
* modification, are permitted provided that the following conditions |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
6 |
* are met: |
26067
b32ccc3a76c9
8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents:
17758
diff
changeset
|
7 |
* |
16212
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
8 |
* - Redistributions of source code must retain the above copyright |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
9 |
* notice, this list of conditions and the following disclaimer. |
26067
b32ccc3a76c9
8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents:
17758
diff
changeset
|
10 |
* |
16212
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
11 |
* - Redistributions in binary form must reproduce the above copyright |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
12 |
* notice, this list of conditions and the following disclaimer in the |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
13 |
* documentation and/or other materials provided with the distribution. |
26067
b32ccc3a76c9
8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents:
17758
diff
changeset
|
14 |
* |
16212
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
15 |
* - Neither the name of Oracle nor the names of its |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
16 |
* contributors may be used to endorse or promote products derived |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
17 |
* from this software without specific prior written permission. |
26067
b32ccc3a76c9
8055199: Tidy up Nashorn codebase for code standards (August 2014)
attila
parents:
17758
diff
changeset
|
18 |
* |
16212
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
19 |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
20 |
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
21 |
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
22 |
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
23 |
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
24 |
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
25 |
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
26 |
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
27 |
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
28 |
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
29 |
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
30 |
*/ |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
31 |
|
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
32 |
// create Java String array of 5 elements |
16522 | 33 |
var StringArray = Java.type("java.lang.String[]"); |
34 |
var a = new StringArray(5); |
|
16212
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
35 |
|
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
36 |
// Accessing elements and length access is by usual Java syntax |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
37 |
a[0] = "scripting is great!"; |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
38 |
print(a.length); |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
39 |
print(a[0]); |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
40 |
|
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
41 |
// convert a script array to Java array |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
42 |
var anArray = [1, "13", false]; |
17758
2b056941e4dd
8014797: rename Java.toJavaArray/toJavaScriptArray to Java.to/from, respectively.
attila
parents:
16522
diff
changeset
|
43 |
var javaIntArray = Java.to(anArray, "int[]"); |
16212
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
44 |
print(javaIntArray[0]);// prints 1 |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
45 |
print(javaIntArray[1]); // prints 13, as string "13" was converted to number 13 as per ECMAScript ToNumber conversion |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
46 |
print(javaIntArray[2]);// prints 0, as boolean false was converted to number 0 as per ECMAScript ToNumber conversion |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
47 |
|
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
48 |
// convert a Java array to a JavaScript array |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
49 |
var File = Java.type("java.io.File"); |
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
50 |
var listCurDir = new File(".").listFiles(); |
17758
2b056941e4dd
8014797: rename Java.toJavaArray/toJavaScriptArray to Java.to/from, respectively.
attila
parents:
16522
diff
changeset
|
51 |
var jsList = Java.from(listCurDir); |
16212
363737d0d757
8007452: add scripting programmers doc changes for nashorn
sundar
parents:
diff
changeset
|
52 |
print(jsList); |