Mercurial > jdk8-mips64-public > nashorn / file comparison
comparison: samples/dateconversion.js
samples/dateconversion.js
- changeset 1401
- da52a33a5e93
equal
deleted
inserted
replaced
| 1400:e40d2ac8d070 | 1401:da52a33a5e93 |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * | |
| 8 * - Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * | |
| 11 * - Redistributions in binary form must reproduce the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer in the | |
| 13 * documentation and/or other materials provided with the distribution. | |
| 14 * | |
| 15 * - Neither the name of Oracle nor the names of its | |
| 16 * contributors may be used to endorse or promote products derived | |
| 17 * from this software without specific prior written permission. | |
| 18 * | |
| 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
| 20 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
| 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 30 */ | |
| 31 | |
| 32 // Converting between #javascript Date and #java8 LocalDateTime with #nashorn | |
| 33 | |
| 34 // JavaScript Date with current time | |
| 35 var d = new Date(); | |
| 36 print(d); | |
| 37 | |
| 38 // Java 8 java.time classes used | |
| 39 var Instant = java.time.Instant; | |
| 40 var LocalDateTime = java.time.LocalDateTime; | |
| 41 var ZoneId = java.time.ZoneId; | |
| 42 | |
| 43 // Date.prototype.getTime | |
| 44 | |
| 45 // getTime() method returns the numeric value corresponding to the time | |
| 46 // for the specified date according to universal time. The value returned | |
| 47 // by the getTime() method is the number of milliseconds since 1 January 1970 00:00:00 UTC. | |
| 48 // See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTime | |
| 49 | |
| 50 // Java Instant.ofEpochMilli to convert time in milliseconds to Instant object | |
| 51 // https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#ofEpochMilli-long- | |
| 52 | |
| 53 var instant = Instant.ofEpochMilli(d.getTime()); | |
| 54 | |
| 55 // Instant to LocalDateTime using LocalDateTime.ofInstant | |
| 56 // https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html#ofInstant-java.time.Instant-java.time.ZoneId- | |
| 57 | |
| 58 var ldt = LocalDateTime.ofInstant(instant, ZoneId.systemDefault()); | |
| 59 print(ldt); | |
| 60 | |
| 61 // converting a LocalDateTime to JavaScript Date | |
| 62 // convert LocalDateTime to Instant first | |
| 63 // https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html#atZone-java.time.ZoneId- | |
| 64 | |
| 65 var instant = ldt.atZone(ZoneId.systemDefault()).toInstant(); | |
| 66 | |
| 67 // instant to to epoch milliseconds | |
| 68 // https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#toEpochMilli-- | |
| 69 // and then to JavaScript Date from time in milliseconds | |
| 70 // https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Date | |
| 71 | |
| 72 var d1 = new Date(instant.toEpochMilli()); | |
| 73 print(d1); |
