nashorn/docs/source/javaarray.js
author iignatyev
Wed, 24 May 2017 15:21:14 -0700
changeset 45169 72bd5e8aab2f
parent 26067 b32ccc3a76c9
permissions -rw-r--r--
8180399: move jdk.testlibrary.LockFreeLogManager to the top level test library Reviewed-by: psandoz, mchung
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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
d643e3ee819c 8009757: Package access clean up and refactoring
sundar
parents: 16212
diff changeset
    33
var StringArray = Java.type("java.lang.String[]");
d643e3ee819c 8009757: Package access clean up and refactoring
sundar
parents: 16212
diff changeset
    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);