--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/dateconversion.js Mon Jun 08 14:10:39 2015 +0530
@@ -0,0 +1,73 @@
+/*
+ * 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);