1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/samples/dateconversion.js Wed Jun 17 23:30:09 2015 -0700 1.3 @@ -0,0 +1,73 @@ 1.4 +/* 1.5 + * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 1.6 + * 1.7 + * Redistribution and use in source and binary forms, with or without 1.8 + * modification, are permitted provided that the following conditions 1.9 + * are met: 1.10 + * 1.11 + * - Redistributions of source code must retain the above copyright 1.12 + * notice, this list of conditions and the following disclaimer. 1.13 + * 1.14 + * - Redistributions in binary form must reproduce the above copyright 1.15 + * notice, this list of conditions and the following disclaimer in the 1.16 + * documentation and/or other materials provided with the distribution. 1.17 + * 1.18 + * - Neither the name of Oracle nor the names of its 1.19 + * contributors may be used to endorse or promote products derived 1.20 + * from this software without specific prior written permission. 1.21 + * 1.22 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 1.23 + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 1.24 + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 1.25 + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 1.26 + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 1.27 + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 1.28 + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 1.29 + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 1.30 + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 1.31 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 1.32 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 1.33 + */ 1.34 + 1.35 +// Converting between #javascript Date and #java8 LocalDateTime with #nashorn 1.36 + 1.37 +// JavaScript Date with current time 1.38 +var d = new Date(); 1.39 +print(d); 1.40 + 1.41 +// Java 8 java.time classes used 1.42 +var Instant = java.time.Instant; 1.43 +var LocalDateTime = java.time.LocalDateTime; 1.44 +var ZoneId = java.time.ZoneId; 1.45 + 1.46 +// Date.prototype.getTime 1.47 + 1.48 +// getTime() method returns the numeric value corresponding to the time 1.49 +// for the specified date according to universal time. The value returned 1.50 +// by the getTime() method is the number of milliseconds since 1 January 1970 00:00:00 UTC. 1.51 +// See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTime 1.52 + 1.53 +// Java Instant.ofEpochMilli to convert time in milliseconds to Instant object 1.54 +// https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#ofEpochMilli-long- 1.55 + 1.56 +var instant = Instant.ofEpochMilli(d.getTime()); 1.57 + 1.58 +// Instant to LocalDateTime using LocalDateTime.ofInstant 1.59 +// https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html#ofInstant-java.time.Instant-java.time.ZoneId- 1.60 + 1.61 +var ldt = LocalDateTime.ofInstant(instant, ZoneId.systemDefault()); 1.62 +print(ldt); 1.63 + 1.64 +// converting a LocalDateTime to JavaScript Date 1.65 +// convert LocalDateTime to Instant first 1.66 +// https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html#atZone-java.time.ZoneId- 1.67 + 1.68 +var instant = ldt.atZone(ZoneId.systemDefault()).toInstant(); 1.69 + 1.70 +// instant to to epoch milliseconds 1.71 +// https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#toEpochMilli-- 1.72 +// and then to JavaScript Date from time in milliseconds 1.73 +// https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Date 1.74 + 1.75 +var d1 = new Date(instant.toEpochMilli()); 1.76 +print(d1);