| /* |
| * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * 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, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| // Converting between #javascript Date and #java8 LocalDateTime with #nashorn |
| |
| // JavaScript Date with current time |
| var d = new Date(); |
| print(d); |
| |
| // Java 8 java.time classes used |
| var Instant = java.time.Instant; |
| var LocalDateTime = java.time.LocalDateTime; |
| var ZoneId = java.time.ZoneId; |
| |
| // Date.prototype.getTime |
| |
| // getTime() method returns the numeric value corresponding to the time |
| // for the specified date according to universal time. The value returned |
| // by the getTime() method is the number of milliseconds since 1 January 1970 00:00:00 UTC. |
| // See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTime |
| |
| // Java Instant.ofEpochMilli to convert time in milliseconds to Instant object |
| // https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#ofEpochMilli-long- |
| |
| var instant = Instant.ofEpochMilli(d.getTime()); |
| |
| // Instant to LocalDateTime using LocalDateTime.ofInstant |
| // https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html#ofInstant-java.time.Instant-java.time.ZoneId- |
| |
| var ldt = LocalDateTime.ofInstant(instant, ZoneId.systemDefault()); |
| print(ldt); |
| |
| // converting a LocalDateTime to JavaScript Date |
| // convert LocalDateTime to Instant first |
| // https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html#atZone-java.time.ZoneId- |
| |
| var instant = ldt.atZone(ZoneId.systemDefault()).toInstant(); |
| |
| // instant to to epoch milliseconds |
| // https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#toEpochMilli-- |
| // and then to JavaScript Date from time in milliseconds |
| // https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Date |
| |
| var d1 = new Date(instant.toEpochMilli()); |
| print(d1); |